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Finding the Fourth Proportional to 127,959.48, 176,584.28 and 71,374.48

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Solution

The fourth proportional to 127,959.48, 176,584.28 and 71,374.48 is: 98,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.48 : 176,584.28 = 71,374.48 : x
  2. Step 2: Convert to fraction form
    127,959.48/176,584.28 = 71,374.48/x
  3. Step 3: Cross multiply
    127,959.48x = 176,584.28 × 71,374.48
  4. Step 4: Simplify right side
    127,959.48x = 12,603,611,161.17
  5. Step 5: Solve for x
    x = 12,603,611,161.17/127,959.48
  6. Step 6: Final answer
    x = 98,496.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.