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Finding the Fourth Proportional to 360,921.72, 541,042.11 and 124,098.78

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Solution

The fourth proportional to 360,921.72, 541,042.11 and 124,098.78 is: 186,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,921.72 : 541,042.11 = 124,098.78 : x
  2. Step 2: Convert to fraction form
    360,921.72/541,042.11 = 124,098.78/x
  3. Step 3: Cross multiply
    360,921.72x = 541,042.11 × 124,098.78
  4. Step 4: Simplify right side
    360,921.72x = 67,142,665,779.63
  5. Step 5: Solve for x
    x = 67,142,665,779.63/360,921.72
  6. Step 6: Final answer
    x = 186,031.10

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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.