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Finding the Fourth Proportional to 256,891.38, 354,504.51 and 140,604.33

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Solution

The fourth proportional to 256,891.38, 354,504.51 and 140,604.33 is: 194,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,891.38 : 354,504.51 = 140,604.33 : x
  2. Step 2: Convert to fraction form
    256,891.38/354,504.51 = 140,604.33/x
  3. Step 3: Cross multiply
    256,891.38x = 354,504.51 × 140,604.33
  4. Step 4: Simplify right side
    256,891.38x = 49,844,869,110.53
  5. Step 5: Solve for x
    x = 49,844,869,110.53/256,891.38
  6. Step 6: Final answer
    x = 194,030.91

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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.