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Finding the Fourth Proportional to 113,863.20, 170,650.80 and 43,648.80

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Solution

The fourth proportional to 113,863.20, 170,650.80 and 43,648.80 is: 65,418.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,863.20 : 170,650.80 = 43,648.80 : x
  2. Step 2: Convert to fraction form
    113,863.20/170,650.80 = 43,648.80/x
  3. Step 3: Cross multiply
    113,863.20x = 170,650.80 × 43,648.80
  4. Step 4: Simplify right side
    113,863.20x = 7,448,702,639.04
  5. Step 5: Solve for x
    x = 7,448,702,639.04/113,863.20
  6. Step 6: Final answer
    x = 65,418.00

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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.