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Finding the Fourth Proportional to 208,763.46, 313,141.53 and 144,662.49

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Solution

The fourth proportional to 208,763.46, 313,141.53 and 144,662.49 is: 216,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,763.46 : 313,141.53 = 144,662.49 : x
  2. Step 2: Convert to fraction form
    208,763.46/313,141.53 = 144,662.49/x
  3. Step 3: Cross multiply
    208,763.46x = 313,141.53 × 144,662.49
  4. Step 4: Simplify right side
    208,763.46x = 45,299,833,452.21
  5. Step 5: Solve for x
    x = 45,299,833,452.21/208,763.46
  6. Step 6: Final answer
    x = 216,991.20

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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.