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Finding the Fourth Proportional to 639,483.88, 882,487.92 and 353,004.16

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Solution

The fourth proportional to 639,483.88, 882,487.92 and 353,004.16 is: 487,145.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,483.88 : 882,487.92 = 353,004.16 : x
  2. Step 2: Convert to fraction form
    639,483.88/882,487.92 = 353,004.16/x
  3. Step 3: Cross multiply
    639,483.88x = 882,487.92 × 353,004.16
  4. Step 4: Simplify right side
    639,483.88x = 311,521,906,909.75
  5. Step 5: Solve for x
    x = 311,521,906,909.75/639,483.88
  6. Step 6: Final answer
    x = 487,145.83

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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.