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Finding the Fourth Proportional to 107,471.18, 148,308.90 and 62,147.90

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Solution

The fourth proportional to 107,471.18, 148,308.90 and 62,147.90 is: 85,763.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,471.18 : 148,308.90 = 62,147.90 : x
  2. Step 2: Convert to fraction form
    107,471.18/148,308.90 = 62,147.90/x
  3. Step 3: Cross multiply
    107,471.18x = 148,308.90 × 62,147.90
  4. Step 4: Simplify right side
    107,471.18x = 9,217,086,686.31
  5. Step 5: Solve for x
    x = 9,217,086,686.31/107,471.18
  6. Step 6: Final answer
    x = 85,763.33

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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.