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Finding the Fourth Proportional to 70,694,712.90, 105,802,920.90 and 62,085,368.70

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Solution

The fourth proportional to 70,694,712.90, 105,802,920.90 and 62,085,368.70 is: 92,918,028.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694,712.90 : 105,802,920.90 = 62,085,368.70 : x
  2. Step 2: Convert to fraction form
    70,694,712.90/105,802,920.90 = 62,085,368.70/x
  3. Step 3: Cross multiply
    70,694,712.90x = 105,802,920.90 × 62,085,368.70
  4. Step 4: Simplify right side
    70,694,712.90x = 6,568,813,353,613,437
  5. Step 5: Solve for x
    x = 6,568,813,353,613,437/70,694,712.90
  6. Step 6: Final answer
    x = 92,918,028.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.