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Finding the Fourth Proportional to 1,039,714.30, 1,556,947.05 and 682,795.90

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Solution

The fourth proportional to 1,039,714.30, 1,556,947.05 and 682,795.90 is: 1,022,470.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,714.30 : 1,556,947.05 = 682,795.90 : x
  2. Step 2: Convert to fraction form
    1,039,714.30/1,556,947.05 = 682,795.90/x
  3. Step 3: Cross multiply
    1,039,714.30x = 1,556,947.05 × 682,795.90
  4. Step 4: Simplify right side
    1,039,714.30x = 1,063,077,062,257.10
  5. Step 5: Solve for x
    x = 1,063,077,062,257.10/1,039,714.30
  6. Step 6: Final answer
    x = 1,022,470.37

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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.