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Finding the Fourth Proportional to 32,805,212.80, 49,207,819.20 and 20,635,213.90

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Solution

The fourth proportional to 32,805,212.80, 49,207,819.20 and 20,635,213.90 is: 30,952,820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,805,212.80 : 49,207,819.20 = 20,635,213.90 : x
  2. Step 2: Convert to fraction form
    32,805,212.80/49,207,819.20 = 20,635,213.90/x
  3. Step 3: Cross multiply
    32,805,212.80x = 49,207,819.20 × 20,635,213.90
  4. Step 4: Simplify right side
    32,805,212.80x = 1,015,413,874,744,526.88
  5. Step 5: Solve for x
    x = 1,015,413,874,744,526.88/32,805,212.80
  6. Step 6: Final answer
    x = 30,952,820.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.