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Finding the Fourth Proportional to 664,956.52, 998,911.15 and 412,423.72

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Solution

The fourth proportional to 664,956.52, 998,911.15 and 412,423.72 is: 619,551.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,956.52 : 998,911.15 = 412,423.72 : x
  2. Step 2: Convert to fraction form
    664,956.52/998,911.15 = 412,423.72/x
  3. Step 3: Cross multiply
    664,956.52x = 998,911.15 × 412,423.72
  4. Step 4: Simplify right side
    664,956.52x = 411,974,652,432.48
  5. Step 5: Solve for x
    x = 411,974,652,432.48/664,956.52
  6. Step 6: Final answer
    x = 619,551.26

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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.