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Finding the Fourth Proportional to 71,215.97, 98,053.08 and 62,712.32

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Solution

The fourth proportional to 71,215.97, 98,053.08 and 62,712.32 is: 86,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215.97 : 98,053.08 = 62,712.32 : x
  2. Step 2: Convert to fraction form
    71,215.97/98,053.08 = 62,712.32/x
  3. Step 3: Cross multiply
    71,215.97x = 98,053.08 × 62,712.32
  4. Step 4: Simplify right side
    71,215.97x = 6,149,136,129.95
  5. Step 5: Solve for x
    x = 6,149,136,129.95/71,215.97
  6. Step 6: Final answer
    x = 86,344.90

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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.