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Finding the Fourth Proportional to 70,452.38, 97,221.72 and 38,620.60

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Solution

The fourth proportional to 70,452.38, 97,221.72 and 38,620.60 is: 53,295.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,452.38 : 97,221.72 = 38,620.60 : x
  2. Step 2: Convert to fraction form
    70,452.38/97,221.72 = 38,620.60/x
  3. Step 3: Cross multiply
    70,452.38x = 97,221.72 × 38,620.60
  4. Step 4: Simplify right side
    70,452.38x = 3,754,760,843.96
  5. Step 5: Solve for x
    x = 3,754,760,843.96/70,452.38
  6. Step 6: Final answer
    x = 53,295.02

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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.