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Finding the Fourth Proportional to 127,294.60, 191,015.91 and 52,422.28

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Solution

The fourth proportional to 127,294.60, 191,015.91 and 52,422.28 is: 78,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,294.60 : 191,015.91 = 52,422.28 : x
  2. Step 2: Convert to fraction form
    127,294.60/191,015.91 = 52,422.28/x
  3. Step 3: Cross multiply
    127,294.60x = 191,015.91 × 52,422.28
  4. Step 4: Simplify right side
    127,294.60x = 10,013,489,518.47
  5. Step 5: Solve for x
    x = 10,013,489,518.47/127,294.60
  6. Step 6: Final answer
    x = 78,663.90

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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.