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Finding the Fourth Proportional to 121,506.57, 182,496.39 and 99,033.86

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Solution

The fourth proportional to 121,506.57, 182,496.39 and 99,033.86 is: 148,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,506.57 : 182,496.39 = 99,033.86 : x
  2. Step 2: Convert to fraction form
    121,506.57/182,496.39 = 99,033.86/x
  3. Step 3: Cross multiply
    121,506.57x = 182,496.39 × 99,033.86
  4. Step 4: Simplify right side
    121,506.57x = 18,073,322,394.01
  5. Step 5: Solve for x
    x = 18,073,322,394.01/121,506.57
  6. Step 6: Final answer
    x = 148,743.58

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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.