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Finding the Fourth Proportional to 639,655.05, 882,737.73 and 353,193.24

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Solution

The fourth proportional to 639,655.05, 882,737.73 and 353,193.24 is: 487,414.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,655.05 : 882,737.73 = 353,193.24 : x
  2. Step 2: Convert to fraction form
    639,655.05/882,737.73 = 353,193.24/x
  3. Step 3: Cross multiply
    639,655.05x = 882,737.73 × 353,193.24
  4. Step 4: Simplify right side
    639,655.05x = 311,776,998,928.95
  5. Step 5: Solve for x
    x = 311,776,998,928.95/639,655.05
  6. Step 6: Final answer
    x = 487,414.27

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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.