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Finding the Fourth Proportional to 132,449.48, 198,698.70 and 43,709.16

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Solution

The fourth proportional to 132,449.48, 198,698.70 and 43,709.16 is: 65,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,449.48 : 198,698.70 = 43,709.16 : x
  2. Step 2: Convert to fraction form
    132,449.48/198,698.70 = 43,709.16/x
  3. Step 3: Cross multiply
    132,449.48x = 198,698.70 × 43,709.16
  4. Step 4: Simplify right side
    132,449.48x = 8,684,953,270.09
  5. Step 5: Solve for x
    x = 8,684,953,270.09/132,449.48
  6. Step 6: Final answer
    x = 65,571.82

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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.