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Finding the Fourth Proportional to 108,358.56, 149,474.62 and 63,031.44

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Solution

The fourth proportional to 108,358.56, 149,474.62 and 63,031.44 is: 86,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,358.56 : 149,474.62 = 63,031.44 : x
  2. Step 2: Convert to fraction form
    108,358.56/149,474.62 = 63,031.44/x
  3. Step 3: Cross multiply
    108,358.56x = 149,474.62 × 63,031.44
  4. Step 4: Simplify right side
    108,358.56x = 9,421,600,542.05
  5. Step 5: Solve for x
    x = 9,421,600,542.05/108,358.56
  6. Step 6: Final answer
    x = 86,948.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.