Home / 28,434,325,869.11-39,220,475,534.92-18,285,883,993.71

Finding the Fourth Proportional to 28,434,325,869.11, 39,220,475,534.92 and 18,285,883,993.71

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Solution

The fourth proportional to 28,434,325,869.11, 39,220,475,534.92 and 18,285,883,993.71 is: 25,222,369,227.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434,325,869.11 : 39,220,475,534.92 = 18,285,883,993.71 : x
  2. Step 2: Convert to fraction form
    28,434,325,869.11/39,220,475,534.92 = 18,285,883,993.71/x
  3. Step 3: Cross multiply
    28,434,325,869.11x = 39,220,475,534.92 × 18,285,883,993.71
  4. Step 4: Simplify right side
    28,434,325,869.11x = 717,181,065,809,596,776,448
  5. Step 5: Solve for x
    x = 717,181,065,809,596,776,448/28,434,325,869.11
  6. Step 6: Final answer
    x = 25,222,369,227.64

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Double scale
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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.