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Finding the Fourth Proportional to 5,364,857.85, 7,400,899.75 and 3,187,859.28

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Solution

The fourth proportional to 5,364,857.85, 7,400,899.75 and 3,187,859.28 is: 4,397,698.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,364,857.85 : 7,400,899.75 = 3,187,859.28 : x
  2. Step 2: Convert to fraction form
    5,364,857.85/7,400,899.75 = 3,187,859.28/x
  3. Step 3: Cross multiply
    5,364,857.85x = 7,400,899.75 × 3,187,859.28
  4. Step 4: Simplify right side
    5,364,857.85x = 23,593,026,948,387.18
  5. Step 5: Solve for x
    x = 23,593,026,948,387.18/5,364,857.85
  6. Step 6: Final answer
    x = 4,397,698.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.