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Finding the Fourth Proportional to 640,589.45, 884,023.92 and 382,488.95

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Solution

The fourth proportional to 640,589.45, 884,023.92 and 382,488.95 is: 527,841.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,589.45 : 884,023.92 = 382,488.95 : x
  2. Step 2: Convert to fraction form
    640,589.45/884,023.92 = 382,488.95/x
  3. Step 3: Cross multiply
    640,589.45x = 884,023.92 × 382,488.95
  4. Step 4: Simplify right side
    640,589.45x = 338,129,376,515.56
  5. Step 5: Solve for x
    x = 338,129,376,515.56/640,589.45
  6. Step 6: Final answer
    x = 527,841.01

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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.