Home / 28,434,325,871.11-39,220,475,537.67-18,285,883,995.71

Finding the Fourth Proportional to 28,434,325,871.11, 39,220,475,537.67 and 18,285,883,995.71

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Solution

The fourth proportional to 28,434,325,871.11, 39,220,475,537.67 and 18,285,883,995.71 is: 25,222,369,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434,325,871.11 : 39,220,475,537.67 = 18,285,883,995.71 : x
  2. Step 2: Convert to fraction form
    28,434,325,871.11/39,220,475,537.67 = 18,285,883,995.71/x
  3. Step 3: Cross multiply
    28,434,325,871.11x = 39,220,475,537.67 × 18,285,883,995.71
  4. Step 4: Simplify right side
    28,434,325,871.11x = 717,181,065,938,415,386,624
  5. Step 5: Solve for x
    x = 717,181,065,938,415,386,624/28,434,325,871.11
  6. Step 6: Final answer
    x = 25,222,369,230.39

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Double scale
Find fourth proportional to 28,434,325,872.11, 39,220,475,539.05 and 18,285,883,996.71
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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.