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Finding the Fourth Proportional to 644,614.08, 966,913.92 and 391,964.16

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Solution

The fourth proportional to 644,614.08, 966,913.92 and 391,964.16 is: 587,941.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,614.08 : 966,913.92 = 391,964.16 : x
  2. Step 2: Convert to fraction form
    644,614.08/966,913.92 = 391,964.16/x
  3. Step 3: Cross multiply
    644,614.08x = 966,913.92 × 391,964.16
  4. Step 4: Simplify right side
    644,614.08x = 378,995,602,445.11
  5. Step 5: Solve for x
    x = 378,995,602,445.11/644,614.08
  6. Step 6: Final answer
    x = 587,941.86

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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.