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Finding the Fourth Proportional to 127,447.61, 191,159.04 and 38,701.89

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Solution

The fourth proportional to 127,447.61, 191,159.04 and 38,701.89 is: 58,049.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,447.61 : 191,159.04 = 38,701.89 : x
  2. Step 2: Convert to fraction form
    127,447.61/191,159.04 = 38,701.89/x
  3. Step 3: Cross multiply
    127,447.61x = 191,159.04 × 38,701.89
  4. Step 4: Simplify right side
    127,447.61x = 7,398,215,421.74
  5. Step 5: Solve for x
    x = 7,398,215,421.74/127,447.61
  6. Step 6: Final answer
    x = 58,049.07

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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.