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Finding the Fourth Proportional to 73,116.93, 109,719.09 and 67,168.29

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Solution

The fourth proportional to 73,116.93, 109,719.09 and 67,168.29 is: 100,792.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,116.93 : 109,719.09 = 67,168.29 : x
  2. Step 2: Convert to fraction form
    73,116.93/109,719.09 = 67,168.29/x
  3. Step 3: Cross multiply
    73,116.93x = 109,719.09 × 67,168.29
  4. Step 4: Simplify right side
    73,116.93x = 7,369,643,655.66
  5. Step 5: Solve for x
    x = 7,369,643,655.66/73,116.93
  6. Step 6: Final answer
    x = 100,792.58

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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.