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Finding the Fourth Proportional to 7,910,700.80, 11,866,051.20 and 2,230,851.20

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Solution

The fourth proportional to 7,910,700.80, 11,866,051.20 and 2,230,851.20 is: 3,346,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910,700.80 : 11,866,051.20 = 2,230,851.20 : x
  2. Step 2: Convert to fraction form
    7,910,700.80/11,866,051.20 = 2,230,851.20/x
  3. Step 3: Cross multiply
    7,910,700.80x = 11,866,051.20 × 2,230,851.20
  4. Step 4: Simplify right side
    7,910,700.80x = 26,471,394,558,781.44
  5. Step 5: Solve for x
    x = 26,471,394,558,781.44/7,910,700.80
  6. Step 6: Final answer
    x = 3,346,276.80

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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.