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Finding the Fourth Proportional to 73,223.80, 109,689.90 and 42,022.60

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Solution

The fourth proportional to 73,223.80, 109,689.90 and 42,022.60 is: 62,950.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,223.80 : 109,689.90 = 42,022.60 : x
  2. Step 2: Convert to fraction form
    73,223.80/109,689.90 = 42,022.60/x
  3. Step 3: Cross multiply
    73,223.80x = 109,689.90 × 42,022.60
  4. Step 4: Simplify right side
    73,223.80x = 4,609,454,791.74
  5. Step 5: Solve for x
    x = 4,609,454,791.74/73,223.80
  6. Step 6: Final answer
    x = 62,950.23

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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.