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Finding the Fourth Proportional to 180,639.52, 271,127.40 and 91,959.41

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Solution

The fourth proportional to 180,639.52, 271,127.40 and 91,959.41 is: 138,024.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,639.52 : 271,127.40 = 91,959.41 : x
  2. Step 2: Convert to fraction form
    180,639.52/271,127.40 = 91,959.41/x
  3. Step 3: Cross multiply
    180,639.52x = 271,127.40 × 91,959.41
  4. Step 4: Simplify right side
    180,639.52x = 24,932,715,279.04
  5. Step 5: Solve for x
    x = 24,932,715,279.04/180,639.52
  6. Step 6: Final answer
    x = 138,024.70

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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.