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Finding the Fourth Proportional to 124,300.71, 171,534.11 and 67,712.09

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Solution

The fourth proportional to 124,300.71, 171,534.11 and 67,712.09 is: 93,442.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,300.71 : 171,534.11 = 67,712.09 : x
  2. Step 2: Convert to fraction form
    124,300.71/171,534.11 = 67,712.09/x
  3. Step 3: Cross multiply
    124,300.71x = 171,534.11 × 67,712.09
  4. Step 4: Simplify right side
    124,300.71x = 11,614,931,898.16
  5. Step 5: Solve for x
    x = 11,614,931,898.16/124,300.71
  6. Step 6: Final answer
    x = 93,442.20

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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.