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Finding the Fourth Proportional to 269,832.25, 372,412.25 and 156,720.61

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Solution

The fourth proportional to 269,832.25, 372,412.25 and 156,720.61 is: 216,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,832.25 : 372,412.25 = 156,720.61 : x
  2. Step 2: Convert to fraction form
    269,832.25/372,412.25 = 156,720.61/x
  3. Step 3: Cross multiply
    269,832.25x = 372,412.25 × 156,720.61
  4. Step 4: Simplify right side
    269,832.25x = 58,364,674,991.47
  5. Step 5: Solve for x
    x = 58,364,674,991.47/269,832.25
  6. Step 6: Final answer
    x = 216,299.85

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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.