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Finding the Fourth Proportional to 117,008.10, 175,512.15 and 72,101.70

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Solution

The fourth proportional to 117,008.10, 175,512.15 and 72,101.70 is: 108,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,008.10 : 175,512.15 = 72,101.70 : x
  2. Step 2: Convert to fraction form
    117,008.10/175,512.15 = 72,101.70/x
  3. Step 3: Cross multiply
    117,008.10x = 175,512.15 × 72,101.70
  4. Step 4: Simplify right side
    117,008.10x = 12,654,724,385.66
  5. Step 5: Solve for x
    x = 12,654,724,385.66/117,008.10
  6. Step 6: Final answer
    x = 108,152.55

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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.