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Finding the Fourth Proportional to 256,711.76, 354,231.42 and 141,974.84

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Solution

The fourth proportional to 256,711.76, 354,231.42 and 141,974.84 is: 195,908.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,711.76 : 354,231.42 = 141,974.84 : x
  2. Step 2: Convert to fraction form
    256,711.76/354,231.42 = 141,974.84/x
  3. Step 3: Cross multiply
    256,711.76x = 354,231.42 × 141,974.84
  4. Step 4: Simplify right side
    256,711.76x = 50,291,949,177.47
  5. Step 5: Solve for x
    x = 50,291,949,177.47/256,711.76
  6. Step 6: Final answer
    x = 195,908.24

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1.5x scale

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.