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Finding the Fourth Proportional to 71,393.81, 98,521.31 and 39,562.02

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Solution

The fourth proportional to 71,393.81, 98,521.31 and 39,562.02 is: 54,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.81 : 98,521.31 = 39,562.02 : x
  2. Step 2: Convert to fraction form
    71,393.81/98,521.31 = 39,562.02/x
  3. Step 3: Cross multiply
    71,393.81x = 98,521.31 × 39,562.02
  4. Step 4: Simplify right side
    71,393.81x = 3,897,702,135.55
  5. Step 5: Solve for x
    x = 3,897,702,135.55/71,393.81
  6. Step 6: Final answer
    x = 54,594.40

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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.