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Finding the Fourth Proportional to 400,562.68, 600,863.44 and 130,690.30

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Solution

The fourth proportional to 400,562.68, 600,863.44 and 130,690.30 is: 196,041.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,562.68 : 600,863.44 = 130,690.30 : x
  2. Step 2: Convert to fraction form
    400,562.68/600,863.44 = 130,690.30/x
  3. Step 3: Cross multiply
    400,562.68x = 600,863.44 × 130,690.30
  4. Step 4: Simplify right side
    400,562.68x = 78,527,023,232.63
  5. Step 5: Solve for x
    x = 78,527,023,232.63/400,562.68
  6. Step 6: Final answer
    x = 196,041.79

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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.