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Finding the Fourth Proportional to 124,436.88, 171,724.68 and 67,851.12

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Solution

The fourth proportional to 124,436.88, 171,724.68 and 67,851.12 is: 93,635.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,436.88 : 171,724.68 = 67,851.12 : x
  2. Step 2: Convert to fraction form
    124,436.88/171,724.68 = 67,851.12/x
  3. Step 3: Cross multiply
    124,436.88x = 171,724.68 × 67,851.12
  4. Step 4: Simplify right side
    124,436.88x = 11,651,711,869.64
  5. Step 5: Solve for x
    x = 11,651,711,869.64/124,436.88
  6. Step 6: Final answer
    x = 93,635.52

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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.