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Finding the Fourth Proportional to 124,661.32, 172,007.11 and 73,648.48

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Solution

The fourth proportional to 124,661.32, 172,007.11 and 73,648.48 is: 101,619.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,661.32 : 172,007.11 = 73,648.48 : x
  2. Step 2: Convert to fraction form
    124,661.32/172,007.11 = 73,648.48/x
  3. Step 3: Cross multiply
    124,661.32x = 172,007.11 × 73,648.48
  4. Step 4: Simplify right side
    124,661.32x = 12,668,062,185.25
  5. Step 5: Solve for x
    x = 12,668,062,185.25/124,661.32
  6. Step 6: Final answer
    x = 101,619.83

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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.