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Finding the Fourth Proportional to 65,822.80, 98,604.60 and 39,449.20

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Solution

The fourth proportional to 65,822.80, 98,604.60 and 39,449.20 is: 59,096.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,822.80 : 98,604.60 = 39,449.20 : x
  2. Step 2: Convert to fraction form
    65,822.80/98,604.60 = 39,449.20/x
  3. Step 3: Cross multiply
    65,822.80x = 98,604.60 × 39,449.20
  4. Step 4: Simplify right side
    65,822.80x = 3,889,872,586.32
  5. Step 5: Solve for x
    x = 3,889,872,586.32/65,822.80
  6. Step 6: Final answer
    x = 59,096.13

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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.