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Finding the Fourth Proportional to 144,644.20, 216,966.30 and 109,652.20

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Solution

The fourth proportional to 144,644.20, 216,966.30 and 109,652.20 is: 164,478.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,644.20 : 216,966.30 = 109,652.20 : x
  2. Step 2: Convert to fraction form
    144,644.20/216,966.30 = 109,652.20/x
  3. Step 3: Cross multiply
    144,644.20x = 216,966.30 × 109,652.20
  4. Step 4: Simplify right side
    144,644.20x = 23,790,832,120.86
  5. Step 5: Solve for x
    x = 23,790,832,120.86/144,644.20
  6. Step 6: Final answer
    x = 164,478.30

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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.