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Finding the Fourth Proportional to 256,479.43, 353,959.94 and 141,755.61

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Solution

The fourth proportional to 256,479.43, 353,959.94 and 141,755.61 is: 195,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,479.43 : 353,959.94 = 141,755.61 : x
  2. Step 2: Convert to fraction form
    256,479.43/353,959.94 = 141,755.61/x
  3. Step 3: Cross multiply
    256,479.43x = 353,959.94 × 141,755.61
  4. Step 4: Simplify right side
    256,479.43x = 50,175,807,210.26
  5. Step 5: Solve for x
    x = 50,175,807,210.26/256,479.43
  6. Step 6: Final answer
    x = 195,632.87

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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.