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Finding the Fourth Proportional to 639,506.72, 882,519.43 and 353,027

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Solution

The fourth proportional to 639,506.72, 882,519.43 and 353,027 is: 487,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,506.72 : 882,519.43 = 353,027 : x
  2. Step 2: Convert to fraction form
    639,506.72/882,519.43 = 353,027/x
  3. Step 3: Cross multiply
    639,506.72x = 882,519.43 × 353,027
  4. Step 4: Simplify right side
    639,506.72x = 311,553,186,814.61
  5. Step 5: Solve for x
    x = 311,553,186,814.61/639,506.72
  6. Step 6: Final answer
    x = 487,177.35

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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.