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Finding the Fourth Proportional to 26,876,704.80, 40,315,057.20 and 26,428,807.20

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Solution

The fourth proportional to 26,876,704.80, 40,315,057.20 and 26,428,807.20 is: 39,643,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,876,704.80 : 40,315,057.20 = 26,428,807.20 : x
  2. Step 2: Convert to fraction form
    26,876,704.80/40,315,057.20 = 26,428,807.20/x
  3. Step 3: Cross multiply
    26,876,704.80x = 40,315,057.20 × 26,428,807.20
  4. Step 4: Simplify right side
    26,876,704.80x = 1,065,478,873,995,771.88
  5. Step 5: Solve for x
    x = 1,065,478,873,995,771.88/26,876,704.80
  6. Step 6: Final answer
    x = 39,643,210.80

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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.