Home / 28,434,325,872.11-39,220,475,539.05-18,285,883,996.71

Finding the Fourth Proportional to 28,434,325,872.11, 39,220,475,539.05 and 18,285,883,996.71

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Solution

The fourth proportional to 28,434,325,872.11, 39,220,475,539.05 and 18,285,883,996.71 is: 25,222,369,231.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434,325,872.11 : 39,220,475,539.05 = 18,285,883,996.71 : x
  2. Step 2: Convert to fraction form
    28,434,325,872.11/39,220,475,539.05 = 18,285,883,996.71/x
  3. Step 3: Cross multiply
    28,434,325,872.11x = 39,220,475,539.05 × 18,285,883,996.71
  4. Step 4: Simplify right side
    28,434,325,872.11x = 717,181,066,002,870,435,840
  5. Step 5: Solve for x
    x = 717,181,066,002,870,435,840/28,434,325,872.11
  6. Step 6: Final answer
    x = 25,222,369,231.77

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Half scale
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Double scale
Find fourth proportional to 28,434,325,873.11, 39,220,475,540.43 and 18,285,883,997.71
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.