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Finding the Fourth Proportional to 127,615.62, 191,451.12 and 38,866.83

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Solution

The fourth proportional to 127,615.62, 191,451.12 and 38,866.83 is: 58,308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,615.62 : 191,451.12 = 38,866.83 : x
  2. Step 2: Convert to fraction form
    127,615.62/191,451.12 = 38,866.83/x
  3. Step 3: Cross multiply
    127,615.62x = 191,451.12 × 38,866.83
  4. Step 4: Simplify right side
    127,615.62x = 7,441,098,134.35
  5. Step 5: Solve for x
    x = 7,441,098,134.35/127,615.62
  6. Step 6: Final answer
    x = 58,308.68

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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.