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Finding the Fourth Proportional to 639,773.01, 882,881.19 and 353,286.93

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Solution

The fourth proportional to 639,773.01, 882,881.19 and 353,286.93 is: 487,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,773.01 : 882,881.19 = 353,286.93 : x
  2. Step 2: Convert to fraction form
    639,773.01/882,881.19 = 353,286.93/x
  3. Step 3: Cross multiply
    639,773.01x = 882,881.19 × 353,286.93
  4. Step 4: Simplify right side
    639,773.01x = 311,910,385,169.85
  5. Step 5: Solve for x
    x = 311,910,385,169.85/639,773.01
  6. Step 6: Final answer
    x = 487,532.89

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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.