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Finding the Fourth Proportional to 3,862,992.80, 5,796,562.80 and 1,619,357.60

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Solution

The fourth proportional to 3,862,992.80, 5,796,562.80 and 1,619,357.60 is: 2,429,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862,992.80 : 5,796,562.80 = 1,619,357.60 : x
  2. Step 2: Convert to fraction form
    3,862,992.80/5,796,562.80 = 1,619,357.60/x
  3. Step 3: Cross multiply
    3,862,992.80x = 5,796,562.80 × 1,619,357.60
  4. Step 4: Simplify right side
    3,862,992.80x = 9,386,708,024,057.28
  5. Step 5: Solve for x
    x = 9,386,708,024,057.28/3,862,992.80
  6. Step 6: Final answer
    x = 2,429,905.65

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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.