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Finding the Fourth Proportional to 62,353.42, 85,979.63 and 42,175.31

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Solution

The fourth proportional to 62,353.42, 85,979.63 and 42,175.31 is: 58,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,353.42 : 85,979.63 = 42,175.31 : x
  2. Step 2: Convert to fraction form
    62,353.42/85,979.63 = 42,175.31/x
  3. Step 3: Cross multiply
    62,353.42x = 85,979.63 × 42,175.31
  4. Step 4: Simplify right side
    62,353.42x = 3,626,217,224.48
  5. Step 5: Solve for x
    x = 3,626,217,224.48/62,353.42
  6. Step 6: Final answer
    x = 58,155.87

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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.