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Finding the Fourth Proportional to 644,632.88, 966,872.28 and 171,354.56

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Solution

The fourth proportional to 644,632.88, 966,872.28 and 171,354.56 is: 257,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,632.88 : 966,872.28 = 171,354.56 : x
  2. Step 2: Convert to fraction form
    644,632.88/966,872.28 = 171,354.56/x
  3. Step 3: Cross multiply
    644,632.88x = 966,872.28 × 171,354.56
  4. Step 4: Simplify right side
    644,632.88x = 165,677,974,115.60
  5. Step 5: Solve for x
    x = 165,677,974,115.60/644,632.88
  6. Step 6: Final answer
    x = 257,011.36

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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.