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Finding the Fourth Proportional to 113,959.60, 170,939.40 and 82,466.80

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Solution

The fourth proportional to 113,959.60, 170,939.40 and 82,466.80 is: 123,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,959.60 : 170,939.40 = 82,466.80 : x
  2. Step 2: Convert to fraction form
    113,959.60/170,939.40 = 82,466.80/x
  3. Step 3: Cross multiply
    113,959.60x = 170,939.40 × 82,466.80
  4. Step 4: Simplify right side
    113,959.60x = 14,096,825,311.92
  5. Step 5: Solve for x
    x = 14,096,825,311.92/113,959.60
  6. Step 6: Final answer
    x = 123,700.20

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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.