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Finding the Fourth Proportional to 256,619.79, 354,120.96 and 141,891.78

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Solution

The fourth proportional to 256,619.79, 354,120.96 and 141,891.78 is: 195,802.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,619.79 : 354,120.96 = 141,891.78 : x
  2. Step 2: Convert to fraction form
    256,619.79/354,120.96 = 141,891.78/x
  3. Step 3: Cross multiply
    256,619.79x = 354,120.96 × 141,891.78
  4. Step 4: Simplify right side
    256,619.79x = 50,246,853,349.71
  5. Step 5: Solve for x
    x = 50,246,853,349.71/256,619.79
  6. Step 6: Final answer
    x = 195,802.72

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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.