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Finding the Fourth Proportional to 639,651.62, 881,668.01 and 453,446.55

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Solution

The fourth proportional to 639,651.62, 881,668.01 and 453,446.55 is: 625,011.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,651.62 : 881,668.01 = 453,446.55 : x
  2. Step 2: Convert to fraction form
    639,651.62/881,668.01 = 453,446.55/x
  3. Step 3: Cross multiply
    639,651.62x = 881,668.01 × 453,446.55
  4. Step 4: Simplify right side
    639,651.62x = 399,789,315,112.63
  5. Step 5: Solve for x
    x = 399,789,315,112.63/639,651.62
  6. Step 6: Final answer
    x = 625,011.03

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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.