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Finding the Fourth Proportional to 163,061.20, 244,591.80 and 74,487.70

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Solution

The fourth proportional to 163,061.20, 244,591.80 and 74,487.70 is: 111,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,061.20 : 244,591.80 = 74,487.70 : x
  2. Step 2: Convert to fraction form
    163,061.20/244,591.80 = 74,487.70/x
  3. Step 3: Cross multiply
    163,061.20x = 244,591.80 × 74,487.70
  4. Step 4: Simplify right side
    163,061.20x = 18,219,080,620.86
  5. Step 5: Solve for x
    x = 18,219,080,620.86/163,061.20
  6. Step 6: Final answer
    x = 111,731.55

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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.