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Finding the Fourth Proportional to 71,673.79, 107,052.34 and 64,909.30

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Solution

The fourth proportional to 71,673.79, 107,052.34 and 64,909.30 is: 96,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,673.79 : 107,052.34 = 64,909.30 : x
  2. Step 2: Convert to fraction form
    71,673.79/107,052.34 = 64,909.30/x
  3. Step 3: Cross multiply
    71,673.79x = 107,052.34 × 64,909.30
  4. Step 4: Simplify right side
    71,673.79x = 6,948,692,452.76
  5. Step 5: Solve for x
    x = 6,948,692,452.76/71,673.79
  6. Step 6: Final answer
    x = 96,948.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.