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Finding the Fourth Proportional to 92,452.64, 138,706.29 and 39,117.20

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Solution

The fourth proportional to 92,452.64, 138,706.29 and 39,117.20 is: 58,687.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,452.64 : 138,706.29 = 39,117.20 : x
  2. Step 2: Convert to fraction form
    92,452.64/138,706.29 = 39,117.20/x
  3. Step 3: Cross multiply
    92,452.64x = 138,706.29 × 39,117.20
  4. Step 4: Simplify right side
    92,452.64x = 5,425,800,993.66
  5. Step 5: Solve for x
    x = 5,425,800,993.66/92,452.64
  6. Step 6: Final answer
    x = 58,687.36

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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.