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Finding the Fourth Proportional to 98,487.68, 147,731.52 and 45,933.92

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Solution

The fourth proportional to 98,487.68, 147,731.52 and 45,933.92 is: 68,900.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,487.68 : 147,731.52 = 45,933.92 : x
  2. Step 2: Convert to fraction form
    98,487.68/147,731.52 = 45,933.92/x
  3. Step 3: Cross multiply
    98,487.68x = 147,731.52 × 45,933.92
  4. Step 4: Simplify right side
    98,487.68x = 6,785,887,821.16
  5. Step 5: Solve for x
    x = 6,785,887,821.16/98,487.68
  6. Step 6: Final answer
    x = 68,900.88

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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.