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Finding the Fourth Proportional to 128,757.30, 193,354.65 and 95,514.90

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Solution

The fourth proportional to 128,757.30, 193,354.65 and 95,514.90 is: 143,434.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,757.30 : 193,354.65 = 95,514.90 : x
  2. Step 2: Convert to fraction form
    128,757.30/193,354.65 = 95,514.90/x
  3. Step 3: Cross multiply
    128,757.30x = 193,354.65 × 95,514.90
  4. Step 4: Simplify right side
    128,757.30x = 18,468,250,059.29
  5. Step 5: Solve for x
    x = 18,468,250,059.29/128,757.30
  6. Step 6: Final answer
    x = 143,434.59

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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.