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Finding the Fourth Proportional to 395,614.68, 593,515.36 and 129,374.16

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Solution

The fourth proportional to 395,614.68, 593,515.36 and 129,374.16 is: 194,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,614.68 : 593,515.36 = 129,374.16 : x
  2. Step 2: Convert to fraction form
    395,614.68/593,515.36 = 129,374.16/x
  3. Step 3: Cross multiply
    395,614.68x = 593,515.36 × 129,374.16
  4. Step 4: Simplify right side
    395,614.68x = 76,785,551,147.10
  5. Step 5: Solve for x
    x = 76,785,551,147.10/395,614.68
  6. Step 6: Final answer
    x = 194,091.76

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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.