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Finding the Fourth Proportional to 262,081.20, 392,927.40 and 112,198.80

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Solution

The fourth proportional to 262,081.20, 392,927.40 and 112,198.80 is: 168,214.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,081.20 : 392,927.40 = 112,198.80 : x
  2. Step 2: Convert to fraction form
    262,081.20/392,927.40 = 112,198.80/x
  3. Step 3: Cross multiply
    262,081.20x = 392,927.40 × 112,198.80
  4. Step 4: Simplify right side
    262,081.20x = 44,085,982,767.12
  5. Step 5: Solve for x
    x = 44,085,982,767.12/262,081.20
  6. Step 6: Final answer
    x = 168,214.98

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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.