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Finding the Fourth Proportional to 127,336.62, 191,085.12 and 71,213.49

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Solution

The fourth proportional to 127,336.62, 191,085.12 and 71,213.49 is: 106,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,336.62 : 191,085.12 = 71,213.49 : x
  2. Step 2: Convert to fraction form
    127,336.62/191,085.12 = 71,213.49/x
  3. Step 3: Cross multiply
    127,336.62x = 191,085.12 × 71,213.49
  4. Step 4: Simplify right side
    127,336.62x = 13,607,838,282.27
  5. Step 5: Solve for x
    x = 13,607,838,282.27/127,336.62
  6. Step 6: Final answer
    x = 106,865.08

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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.