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Finding the Fourth Proportional to 644,683.59, 966,691.67 and 289,391.67

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Solution

The fourth proportional to 644,683.59, 966,691.67 and 289,391.67 is: 433,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,683.59 : 966,691.67 = 289,391.67 : x
  2. Step 2: Convert to fraction form
    644,683.59/966,691.67 = 289,391.67/x
  3. Step 3: Cross multiply
    644,683.59x = 966,691.67 × 289,391.67
  4. Step 4: Simplify right side
    644,683.59x = 279,752,515,309.43
  5. Step 5: Solve for x
    x = 279,752,515,309.43/644,683.59
  6. Step 6: Final answer
    x = 433,937.70

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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.