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Finding the Fourth Proportional to 67,498.80, 101,248.20 and 61,812.60

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Solution

The fourth proportional to 67,498.80, 101,248.20 and 61,812.60 is: 92,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,498.80 : 101,248.20 = 61,812.60 : x
  2. Step 2: Convert to fraction form
    67,498.80/101,248.20 = 61,812.60/x
  3. Step 3: Cross multiply
    67,498.80x = 101,248.20 × 61,812.60
  4. Step 4: Simplify right side
    67,498.80x = 6,258,414,487.32
  5. Step 5: Solve for x
    x = 6,258,414,487.32/67,498.80
  6. Step 6: Final answer
    x = 92,718.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.