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Finding the Fourth Proportional to 124,503.60, 171,815.16 and 67,915.92

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Solution

The fourth proportional to 124,503.60, 171,815.16 and 67,915.92 is: 93,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,503.60 : 171,815.16 = 67,915.92 : x
  2. Step 2: Convert to fraction form
    124,503.60/171,815.16 = 67,915.92/x
  3. Step 3: Cross multiply
    124,503.60x = 171,815.16 × 67,915.92
  4. Step 4: Simplify right side
    124,503.60x = 11,668,984,661.35
  5. Step 5: Solve for x
    x = 11,668,984,661.35/124,503.60
  6. Step 6: Final answer
    x = 93,724.07

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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.