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Finding the Fourth Proportional to 113,712.66, 156,919.50 and 62,726.40

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Solution

The fourth proportional to 113,712.66, 156,919.50 and 62,726.40 is: 86,560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,712.66 : 156,919.50 = 62,726.40 : x
  2. Step 2: Convert to fraction form
    113,712.66/156,919.50 = 62,726.40/x
  3. Step 3: Cross multiply
    113,712.66x = 156,919.50 × 62,726.40
  4. Step 4: Simplify right side
    113,712.66x = 9,842,995,324.80
  5. Step 5: Solve for x
    x = 9,842,995,324.80/113,712.66
  6. Step 6: Final answer
    x = 86,560.24

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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.