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Finding the Fourth Proportional to 172,987.24, 238,721.70 and 93,499.24

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Solution

The fourth proportional to 172,987.24, 238,721.70 and 93,499.24 is: 129,028.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,987.24 : 238,721.70 = 93,499.24 : x
  2. Step 2: Convert to fraction form
    172,987.24/238,721.70 = 93,499.24/x
  3. Step 3: Cross multiply
    172,987.24x = 238,721.70 × 93,499.24
  4. Step 4: Simplify right side
    172,987.24x = 22,320,297,521.51
  5. Step 5: Solve for x
    x = 22,320,297,521.51/172,987.24
  6. Step 6: Final answer
    x = 129,028.58

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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.