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Finding the Fourth Proportional to 639,536.87, 882,559.07 and 353,054.91

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Solution

The fourth proportional to 639,536.87, 882,559.07 and 353,054.91 is: 487,214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,536.87 : 882,559.07 = 353,054.91 : x
  2. Step 2: Convert to fraction form
    639,536.87/882,559.07 = 353,054.91/x
  3. Step 3: Cross multiply
    639,536.87x = 882,559.07 × 353,054.91
  4. Step 4: Simplify right side
    639,536.87x = 311,591,813,911.17
  5. Step 5: Solve for x
    x = 311,591,813,911.17/639,536.87
  6. Step 6: Final answer
    x = 487,214.78

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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.