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Finding the Fourth Proportional to 144,911.40, 217,367.10 and 124,866.60

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Solution

The fourth proportional to 144,911.40, 217,367.10 and 124,866.60 is: 187,299.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,911.40 : 217,367.10 = 124,866.60 : x
  2. Step 2: Convert to fraction form
    144,911.40/217,367.10 = 124,866.60/x
  3. Step 3: Cross multiply
    144,911.40x = 217,367.10 × 124,866.60
  4. Step 4: Simplify right side
    144,911.40x = 27,141,890,728.86
  5. Step 5: Solve for x
    x = 27,141,890,728.86/144,911.40
  6. Step 6: Final answer
    x = 187,299.90

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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.