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Finding the Fourth Proportional to 115,226.58, 172,721.16 and 44,129.82

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Solution

The fourth proportional to 115,226.58, 172,721.16 and 44,129.82 is: 66,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,226.58 : 172,721.16 = 44,129.82 : x
  2. Step 2: Convert to fraction form
    115,226.58/172,721.16 = 44,129.82/x
  3. Step 3: Cross multiply
    115,226.58x = 172,721.16 × 44,129.82
  4. Step 4: Simplify right side
    115,226.58x = 7,622,153,700.99
  5. Step 5: Solve for x
    x = 7,622,153,700.99/115,226.58
  6. Step 6: Final answer
    x = 66,149.27

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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.