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Finding the Fourth Proportional to 256,061.25, 353,364.54 and 141,339.92

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Solution

The fourth proportional to 256,061.25, 353,364.54 and 141,339.92 is: 195,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,061.25 : 353,364.54 = 141,339.92 : x
  2. Step 2: Convert to fraction form
    256,061.25/353,364.54 = 141,339.92/x
  3. Step 3: Cross multiply
    256,061.25x = 353,364.54 × 141,339.92
  4. Step 4: Simplify right side
    256,061.25x = 49,944,516,697.85
  5. Step 5: Solve for x
    x = 49,944,516,697.85/256,061.25
  6. Step 6: Final answer
    x = 195,049.10

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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.