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Finding the Fourth Proportional to 531,597.78, 797,396.64 and 137,613.78

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Solution

The fourth proportional to 531,597.78, 797,396.64 and 137,613.78 is: 206,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,597.78 : 797,396.64 = 137,613.78 : x
  2. Step 2: Convert to fraction form
    531,597.78/797,396.64 = 137,613.78/x
  3. Step 3: Cross multiply
    531,597.78x = 797,396.64 × 137,613.78
  4. Step 4: Simplify right side
    531,597.78x = 109,732,765,789.70
  5. Step 5: Solve for x
    x = 109,732,765,789.70/531,597.78
  6. Step 6: Final answer
    x = 206,420.66

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Double scale
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Similar ratio
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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.