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Finding the Fourth Proportional to 639,526.28, 882,553.42 and 353,046.52

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Solution

The fourth proportional to 639,526.28, 882,553.42 and 353,046.52 is: 487,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,526.28 : 882,553.42 = 353,046.52 : x
  2. Step 2: Convert to fraction form
    639,526.28/882,553.42 = 353,046.52/x
  3. Step 3: Cross multiply
    639,526.28x = 882,553.42 × 353,046.52
  4. Step 4: Simplify right side
    639,526.28x = 311,582,413,645.10
  5. Step 5: Solve for x
    x = 311,582,413,645.10/639,526.28
  6. Step 6: Final answer
    x = 487,208.15

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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.