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Finding the Fourth Proportional to 381,808.80, 572,540.40 and 171,338.40

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Solution

The fourth proportional to 381,808.80, 572,540.40 and 171,338.40 is: 256,930.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,808.80 : 572,540.40 = 171,338.40 : x
  2. Step 2: Convert to fraction form
    381,808.80/572,540.40 = 171,338.40/x
  3. Step 3: Cross multiply
    381,808.80x = 572,540.40 × 171,338.40
  4. Step 4: Simplify right side
    381,808.80x = 98,098,156,071.36
  5. Step 5: Solve for x
    x = 98,098,156,071.36/381,808.80
  6. Step 6: Final answer
    x = 256,930.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.