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Finding the Fourth Proportional to 6,239,700.78, 8,610,844.05 and 3,661,424.52

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Solution

The fourth proportional to 6,239,700.78, 8,610,844.05 and 3,661,424.52 is: 5,052,799.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239,700.78 : 8,610,844.05 = 3,661,424.52 : x
  2. Step 2: Convert to fraction form
    6,239,700.78/8,610,844.05 = 3,661,424.52/x
  3. Step 3: Cross multiply
    6,239,700.78x = 8,610,844.05 × 3,661,424.52
  4. Step 4: Simplify right side
    6,239,700.78x = 31,527,955,542,566.11
  5. Step 5: Solve for x
    x = 31,527,955,542,566.11/6,239,700.78
  6. Step 6: Final answer
    x = 5,052,799.27

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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.