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Finding the Fourth Proportional to 621,600.68, 857,728.22 and 349,659.38

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Solution

The fourth proportional to 621,600.68, 857,728.22 and 349,659.38 is: 482,484.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,600.68 : 857,728.22 = 349,659.38 : x
  2. Step 2: Convert to fraction form
    621,600.68/857,728.22 = 349,659.38/x
  3. Step 3: Cross multiply
    621,600.68x = 857,728.22 × 349,659.38
  4. Step 4: Simplify right side
    621,600.68x = 299,912,717,613.70
  5. Step 5: Solve for x
    x = 299,912,717,613.70/621,600.68
  6. Step 6: Final answer
    x = 482,484.54

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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.