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Finding the Fourth Proportional to 187,873.92, 259,304.20 and 172,742.60

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Solution

The fourth proportional to 187,873.92, 259,304.20 and 172,742.60 is: 238,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,873.92 : 259,304.20 = 172,742.60 : x
  2. Step 2: Convert to fraction form
    187,873.92/259,304.20 = 172,742.60/x
  3. Step 3: Cross multiply
    187,873.92x = 259,304.20 × 172,742.60
  4. Step 4: Simplify right side
    187,873.92x = 44,792,881,698.92
  5. Step 5: Solve for x
    x = 44,792,881,698.92/187,873.92
  6. Step 6: Final answer
    x = 238,419.90

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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.