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Finding the Fourth Proportional to 126,959.70, 190,471.04 and 89,592.78

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Solution

The fourth proportional to 126,959.70, 190,471.04 and 89,592.78 is: 134,411.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,959.70 : 190,471.04 = 89,592.78 : x
  2. Step 2: Convert to fraction form
    126,959.70/190,471.04 = 89,592.78/x
  3. Step 3: Cross multiply
    126,959.70x = 190,471.04 × 89,592.78
  4. Step 4: Simplify right side
    126,959.70x = 17,064,829,535.13
  5. Step 5: Solve for x
    x = 17,064,829,535.13/126,959.70
  6. Step 6: Final answer
    x = 134,411.39

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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.