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Finding the Fourth Proportional to 2,063.60, 3,093.60 and 1,242.20

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Solution

The fourth proportional to 2,063.60, 3,093.60 and 1,242.20 is: 1,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,063.60 : 3,093.60 = 1,242.20 : x
  2. Step 2: Convert to fraction form
    2,063.60/3,093.60 = 1,242.20/x
  3. Step 3: Cross multiply
    2,063.60x = 3,093.60 × 1,242.20
  4. Step 4: Simplify right side
    2,063.60x = 3,842,869.92
  5. Step 5: Solve for x
    x = 3,842,869.92/2,063.60
  6. Step 6: Final answer
    x = 1,862.22

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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.