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Finding the Fourth Proportional to 127,960.56, 191,940.86 and 65,591.28

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Solution

The fourth proportional to 127,960.56, 191,940.86 and 65,591.28 is: 98,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,960.56 : 191,940.86 = 65,591.28 : x
  2. Step 2: Convert to fraction form
    127,960.56/191,940.86 = 65,591.28/x
  3. Step 3: Cross multiply
    127,960.56x = 191,940.86 × 65,591.28
  4. Step 4: Simplify right side
    127,960.56x = 12,589,646,691.70
  5. Step 5: Solve for x
    x = 12,589,646,691.70/127,960.56
  6. Step 6: Final answer
    x = 98,386.93

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1.5x scale

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.