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Finding the Fourth Proportional to 124,762.65, 172,185.13 and 73,791.88

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Solution

The fourth proportional to 124,762.65, 172,185.13 and 73,791.88 is: 101,840.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,762.65 : 172,185.13 = 73,791.88 : x
  2. Step 2: Convert to fraction form
    124,762.65/172,185.13 = 73,791.88/x
  3. Step 3: Cross multiply
    124,762.65x = 172,185.13 × 73,791.88
  4. Step 4: Simplify right side
    124,762.65x = 12,705,863,589.82
  5. Step 5: Solve for x
    x = 12,705,863,589.82/124,762.65
  6. Step 6: Final answer
    x = 101,840.29

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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.