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Finding the Fourth Proportional to 8,839,398.60, 13,259,097.90 and 3,159,808.20

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Solution

The fourth proportional to 8,839,398.60, 13,259,097.90 and 3,159,808.20 is: 4,739,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,839,398.60 : 13,259,097.90 = 3,159,808.20 : x
  2. Step 2: Convert to fraction form
    8,839,398.60/13,259,097.90 = 3,159,808.20/x
  3. Step 3: Cross multiply
    8,839,398.60x = 13,259,097.90 × 3,159,808.20
  4. Step 4: Simplify right side
    8,839,398.60x = 41,896,206,269,022.78
  5. Step 5: Solve for x
    x = 41,896,206,269,022.78/8,839,398.60
  6. Step 6: Final answer
    x = 4,739,712.30

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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.