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Finding the Fourth Proportional to 138,613.60, 194,452.70 and 138,613.60

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Solution

The fourth proportional to 138,613.60, 194,452.70 and 138,613.60 is: 194,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.60 : 194,452.70 = 138,613.60 : x
  2. Step 2: Convert to fraction form
    138,613.60/194,452.70 = 138,613.60/x
  3. Step 3: Cross multiply
    138,613.60x = 194,452.70 × 138,613.60
  4. Step 4: Simplify right side
    138,613.60x = 26,953,788,776.72
  5. Step 5: Solve for x
    x = 26,953,788,776.72/138,613.60
  6. Step 6: Final answer
    x = 194,452.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.