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Finding the Fourth Proportional to 437,447.34, 656,171.28 and 121,912.56

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Solution

The fourth proportional to 437,447.34, 656,171.28 and 121,912.56 is: 182,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,447.34 : 656,171.28 = 121,912.56 : x
  2. Step 2: Convert to fraction form
    437,447.34/656,171.28 = 121,912.56/x
  3. Step 3: Cross multiply
    437,447.34x = 656,171.28 × 121,912.56
  4. Step 4: Simplify right side
    437,447.34x = 79,995,520,543.28
  5. Step 5: Solve for x
    x = 79,995,520,543.28/437,447.34
  6. Step 6: Final answer
    x = 182,868.92

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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.