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Finding the Fourth Proportional to 440,728.80, 608,194.86 and 257,000.82

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Solution

The fourth proportional to 440,728.80, 608,194.86 and 257,000.82 is: 354,654.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,728.80 : 608,194.86 = 257,000.82 : x
  2. Step 2: Convert to fraction form
    440,728.80/608,194.86 = 257,000.82/x
  3. Step 3: Cross multiply
    440,728.80x = 608,194.86 × 257,000.82
  4. Step 4: Simplify right side
    440,728.80x = 156,306,577,739.79
  5. Step 5: Solve for x
    x = 156,306,577,739.79/440,728.80
  6. Step 6: Final answer
    x = 354,654.78

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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.