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Finding the Fourth Proportional to 658,197.05, 908,408.88 and 386,414.85

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Solution

The fourth proportional to 658,197.05, 908,408.88 and 386,414.85 is: 533,309.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,197.05 : 908,408.88 = 386,414.85 : x
  2. Step 2: Convert to fraction form
    658,197.05/908,408.88 = 386,414.85/x
  3. Step 3: Cross multiply
    658,197.05x = 908,408.88 × 386,414.85
  4. Step 4: Simplify right side
    658,197.05x = 351,022,681,103.87
  5. Step 5: Solve for x
    x = 351,022,681,103.87/658,197.05
  6. Step 6: Final answer
    x = 533,309.41

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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.