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Finding the Fourth Proportional to 114,701.80, 172,052.70 and 67,930.60

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Solution

The fourth proportional to 114,701.80, 172,052.70 and 67,930.60 is: 101,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,701.80 : 172,052.70 = 67,930.60 : x
  2. Step 2: Convert to fraction form
    114,701.80/172,052.70 = 67,930.60/x
  3. Step 3: Cross multiply
    114,701.80x = 172,052.70 × 67,930.60
  4. Step 4: Simplify right side
    114,701.80x = 11,687,643,142.62
  5. Step 5: Solve for x
    x = 11,687,643,142.62/114,701.80
  6. Step 6: Final answer
    x = 101,895.90

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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.