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Finding the Fourth Proportional to 391,561.40, 587,123.40 and 166,883.60

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Solution

The fourth proportional to 391,561.40, 587,123.40 and 166,883.60 is: 250,232.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,561.40 : 587,123.40 = 166,883.60 : x
  2. Step 2: Convert to fraction form
    391,561.40/587,123.40 = 166,883.60/x
  3. Step 3: Cross multiply
    391,561.40x = 587,123.40 × 166,883.60
  4. Step 4: Simplify right side
    391,561.40x = 97,981,266,636.24
  5. Step 5: Solve for x
    x = 97,981,266,636.24/391,561.40
  6. Step 6: Final answer
    x = 250,232.19

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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.