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Finding the Fourth Proportional to 5,978,410.80, 8,991,235.80 and 5,364,301.20

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Solution

The fourth proportional to 5,978,410.80, 8,991,235.80 and 5,364,301.20 is: 8,067,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,410.80 : 8,991,235.80 = 5,364,301.20 : x
  2. Step 2: Convert to fraction form
    5,978,410.80/8,991,235.80 = 5,364,301.20/x
  3. Step 3: Cross multiply
    5,978,410.80x = 8,991,235.80 × 5,364,301.20
  4. Step 4: Simplify right side
    5,978,410.80x = 48,231,696,991,422.97
  5. Step 5: Solve for x
    x = 48,231,696,991,422.97/5,978,410.80
  6. Step 6: Final answer
    x = 8,067,645.17

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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.