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Finding the Fourth Proportional to 151,000.64, 208,404.96 and 87,377.12

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Solution

The fourth proportional to 151,000.64, 208,404.96 and 87,377.12 is: 120,594.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,000.64 : 208,404.96 = 87,377.12 : x
  2. Step 2: Convert to fraction form
    151,000.64/208,404.96 = 87,377.12/x
  3. Step 3: Cross multiply
    151,000.64x = 208,404.96 × 87,377.12
  4. Step 4: Simplify right side
    151,000.64x = 18,209,825,198.52
  5. Step 5: Solve for x
    x = 18,209,825,198.52/151,000.64
  6. Step 6: Final answer
    x = 120,594.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.