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Finding the Fourth Proportional to 144,889.50, 217,354.53 and 136,921.50

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Solution

The fourth proportional to 144,889.50, 217,354.53 and 136,921.50 is: 205,401.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,889.50 : 217,354.53 = 136,921.50 : x
  2. Step 2: Convert to fraction form
    144,889.50/217,354.53 = 136,921.50/x
  3. Step 3: Cross multiply
    144,889.50x = 217,354.53 × 136,921.50
  4. Step 4: Simplify right side
    144,889.50x = 29,760,508,279.40
  5. Step 5: Solve for x
    x = 29,760,508,279.40/144,889.50
  6. Step 6: Final answer
    x = 205,401.41

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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.