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Finding the Fourth Proportional to 127,955.40, 192,029.10 and 65,593.80

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Solution

The fourth proportional to 127,955.40, 192,029.10 and 65,593.80 is: 98,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,955.40 : 192,029.10 = 65,593.80 : x
  2. Step 2: Convert to fraction form
    127,955.40/192,029.10 = 65,593.80/x
  3. Step 3: Cross multiply
    127,955.40x = 192,029.10 × 65,593.80
  4. Step 4: Simplify right side
    127,955.40x = 12,595,918,379.58
  5. Step 5: Solve for x
    x = 12,595,918,379.58/127,955.40
  6. Step 6: Final answer
    x = 98,439.91

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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.