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Finding the Fourth Proportional to 118,051.68, 176,981.03 and 54,911.17

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Solution

The fourth proportional to 118,051.68, 176,981.03 and 54,911.17 is: 82,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,051.68 : 176,981.03 = 54,911.17 : x
  2. Step 2: Convert to fraction form
    118,051.68/176,981.03 = 54,911.17/x
  3. Step 3: Cross multiply
    118,051.68x = 176,981.03 × 54,911.17
  4. Step 4: Simplify right side
    118,051.68x = 9,718,234,427.74
  5. Step 5: Solve for x
    x = 9,718,234,427.74/118,051.68
  6. Step 6: Final answer
    x = 82,321.87

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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.