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Finding the Fourth Proportional to 256,555.71, 354,016.22 and 141,818.90

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Solution

The fourth proportional to 256,555.71, 354,016.22 and 141,818.90 is: 195,693.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,555.71 : 354,016.22 = 141,818.90 : x
  2. Step 2: Convert to fraction form
    256,555.71/354,016.22 = 141,818.90/x
  3. Step 3: Cross multiply
    256,555.71x = 354,016.22 × 141,818.90
  4. Step 4: Simplify right side
    256,555.71x = 50,206,188,423.38
  5. Step 5: Solve for x
    x = 50,206,188,423.38/256,555.71
  6. Step 6: Final answer
    x = 195,693.12

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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.