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Finding the Fourth Proportional to 178,215.52, 267,322.80 and 79,650.40

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Solution

The fourth proportional to 178,215.52, 267,322.80 and 79,650.40 is: 119,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,215.52 : 267,322.80 = 79,650.40 : x
  2. Step 2: Convert to fraction form
    178,215.52/267,322.80 = 79,650.40/x
  3. Step 3: Cross multiply
    178,215.52x = 267,322.80 × 79,650.40
  4. Step 4: Simplify right side
    178,215.52x = 21,292,367,949.12
  5. Step 5: Solve for x
    x = 21,292,367,949.12/178,215.52
  6. Step 6: Final answer
    x = 119,475.39

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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.