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Finding the Fourth Proportional to 117,937.60, 176,949.06 and 72,906.28

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Solution

The fourth proportional to 117,937.60, 176,949.06 and 72,906.28 is: 109,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,937.60 : 176,949.06 = 72,906.28 : x
  2. Step 2: Convert to fraction form
    117,937.60/176,949.06 = 72,906.28/x
  3. Step 3: Cross multiply
    117,937.60x = 176,949.06 × 72,906.28
  4. Step 4: Simplify right side
    117,937.60x = 12,900,697,714.10
  5. Step 5: Solve for x
    x = 12,900,697,714.10/117,937.60
  6. Step 6: Final answer
    x = 109,385.79

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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.