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Finding the Fourth Proportional to 144,367.70, 216,507.80 and 43,172.46

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Solution

The fourth proportional to 144,367.70, 216,507.80 and 43,172.46 is: 64,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,367.70 : 216,507.80 = 43,172.46 : x
  2. Step 2: Convert to fraction form
    144,367.70/216,507.80 = 43,172.46/x
  3. Step 3: Cross multiply
    144,367.70x = 216,507.80 × 43,172.46
  4. Step 4: Simplify right side
    144,367.70x = 9,347,174,335.19
  5. Step 5: Solve for x
    x = 9,347,174,335.19/144,367.70
  6. Step 6: Final answer
    x = 64,745.61

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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.