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Finding the Fourth Proportional to 70,398.85, 97,149.60 and 38,132.85

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Solution

The fourth proportional to 70,398.85, 97,149.60 and 38,132.85 is: 52,622.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,398.85 : 97,149.60 = 38,132.85 : x
  2. Step 2: Convert to fraction form
    70,398.85/97,149.60 = 38,132.85/x
  3. Step 3: Cross multiply
    70,398.85x = 97,149.60 × 38,132.85
  4. Step 4: Simplify right side
    70,398.85x = 3,704,591,124.36
  5. Step 5: Solve for x
    x = 3,704,591,124.36/70,398.85
  6. Step 6: Final answer
    x = 52,622.89

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1.5x scale

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.