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Finding the Fourth Proportional to 118,158.16, 177,264.98 and 72,616.62

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Solution

The fourth proportional to 118,158.16, 177,264.98 and 72,616.62 is: 108,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,158.16 : 177,264.98 = 72,616.62 : x
  2. Step 2: Convert to fraction form
    118,158.16/177,264.98 = 72,616.62/x
  3. Step 3: Cross multiply
    118,158.16x = 177,264.98 × 72,616.62
  4. Step 4: Simplify right side
    118,158.16x = 12,872,383,691.97
  5. Step 5: Solve for x
    x = 12,872,383,691.97/118,158.16
  6. Step 6: Final answer
    x = 108,941.98

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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.