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Finding the Fourth Proportional to 71,617.59, 107,367.48 and 31,608.18

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Solution

The fourth proportional to 71,617.59, 107,367.48 and 31,608.18 is: 47,386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,617.59 : 107,367.48 = 31,608.18 : x
  2. Step 2: Convert to fraction form
    71,617.59/107,367.48 = 31,608.18/x
  3. Step 3: Cross multiply
    71,617.59x = 107,367.48 × 31,608.18
  4. Step 4: Simplify right side
    71,617.59x = 3,393,690,633.99
  5. Step 5: Solve for x
    x = 3,393,690,633.99/71,617.59
  6. Step 6: Final answer
    x = 47,386.27

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1.5x scale

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.