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Finding the Fourth Proportional to 251,866.72, 347,562.48 and 144,441.28

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Solution

The fourth proportional to 251,866.72, 347,562.48 and 144,441.28 is: 199,321.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,866.72 : 347,562.48 = 144,441.28 : x
  2. Step 2: Convert to fraction form
    251,866.72/347,562.48 = 144,441.28/x
  3. Step 3: Cross multiply
    251,866.72x = 347,562.48 × 144,441.28
  4. Step 4: Simplify right side
    251,866.72x = 50,202,369,491.17
  5. Step 5: Solve for x
    x = 50,202,369,491.17/251,866.72
  6. Step 6: Final answer
    x = 199,321.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.