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Finding the Fourth Proportional to 132,530.94, 198,860.20 and 65,976.89

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Solution

The fourth proportional to 132,530.94, 198,860.20 and 65,976.89 is: 98,997.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,530.94 : 198,860.20 = 65,976.89 : x
  2. Step 2: Convert to fraction form
    132,530.94/198,860.20 = 65,976.89/x
  3. Step 3: Cross multiply
    132,530.94x = 198,860.20 × 65,976.89
  4. Step 4: Simplify right side
    132,530.94x = 13,120,176,381.53
  5. Step 5: Solve for x
    x = 13,120,176,381.53/132,530.94
  6. Step 6: Final answer
    x = 98,997.08

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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.