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Finding the Fourth Proportional to 256,479.08, 353,934.50 and 143,302.60

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Solution

The fourth proportional to 256,479.08, 353,934.50 and 143,302.60 is: 197,753.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,479.08 : 353,934.50 = 143,302.60 : x
  2. Step 2: Convert to fraction form
    256,479.08/353,934.50 = 143,302.60/x
  3. Step 3: Cross multiply
    256,479.08x = 353,934.50 × 143,302.60
  4. Step 4: Simplify right side
    256,479.08x = 50,719,734,079.70
  5. Step 5: Solve for x
    x = 50,719,734,079.70/256,479.08
  6. Step 6: Final answer
    x = 197,753.88

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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.