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Finding the Fourth Proportional to 81,568.92, 112,500.18 and 67,397.16

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Solution

The fourth proportional to 81,568.92, 112,500.18 and 67,397.16 is: 92,954.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,568.92 : 112,500.18 = 67,397.16 : x
  2. Step 2: Convert to fraction form
    81,568.92/112,500.18 = 67,397.16/x
  3. Step 3: Cross multiply
    81,568.92x = 112,500.18 × 67,397.16
  4. Step 4: Simplify right side
    81,568.92x = 7,582,192,631.49
  5. Step 5: Solve for x
    x = 7,582,192,631.49/81,568.92
  6. Step 6: Final answer
    x = 92,954.43

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1.5x scale

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.