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Finding the Fourth Proportional to 178,638.26, 267,753.55 and 71,953.93

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Solution

The fourth proportional to 178,638.26, 267,753.55 and 71,953.93 is: 107,848.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,638.26 : 267,753.55 = 71,953.93 : x
  2. Step 2: Convert to fraction form
    178,638.26/267,753.55 = 71,953.93/x
  3. Step 3: Cross multiply
    178,638.26x = 267,753.55 × 71,953.93
  4. Step 4: Simplify right side
    178,638.26x = 19,265,920,193.95
  5. Step 5: Solve for x
    x = 19,265,920,193.95/178,638.26
  6. Step 6: Final answer
    x = 107,848.79

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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.