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Finding the Fourth Proportional to 29,809.20, 44,719.80 and 8,749.20

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Solution

The fourth proportional to 29,809.20, 44,719.80 and 8,749.20 is: 13,125.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,809.20 : 44,719.80 = 8,749.20 : x
  2. Step 2: Convert to fraction form
    29,809.20/44,719.80 = 8,749.20/x
  3. Step 3: Cross multiply
    29,809.20x = 44,719.80 × 8,749.20
  4. Step 4: Simplify right side
    29,809.20x = 391,262,474.16
  5. Step 5: Solve for x
    x = 391,262,474.16/29,809.20
  6. Step 6: Final answer
    x = 13,125.56

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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.