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Finding the Fourth Proportional to 657,926.66, 986,691.34 and 342,211.34

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Solution

The fourth proportional to 657,926.66, 986,691.34 and 342,211.34 is: 513,213.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,926.66 : 986,691.34 = 342,211.34 : x
  2. Step 2: Convert to fraction form
    657,926.66/986,691.34 = 342,211.34/x
  3. Step 3: Cross multiply
    657,926.66x = 986,691.34 × 342,211.34
  4. Step 4: Simplify right side
    657,926.66x = 337,656,965,627.80
  5. Step 5: Solve for x
    x = 337,656,965,627.80/657,926.66
  6. Step 6: Final answer
    x = 513,213.68

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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.