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Finding the Fourth Proportional to 1,435,815.32, 1,981,399.73 and 782,447.14

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Solution

The fourth proportional to 1,435,815.32, 1,981,399.73 and 782,447.14 is: 1,079,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435,815.32 : 1,981,399.73 = 782,447.14 : x
  2. Step 2: Convert to fraction form
    1,435,815.32/1,981,399.73 = 782,447.14/x
  3. Step 3: Cross multiply
    1,435,815.32x = 1,981,399.73 × 782,447.14
  4. Step 4: Simplify right side
    1,435,815.32x = 1,550,340,550,499.79
  5. Step 5: Solve for x
    x = 1,550,340,550,499.79/1,435,815.32
  6. Step 6: Final answer
    x = 1,079,763.21

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