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Finding the Fourth Proportional to 73,272.15, 109,908.23 and 68,898.15

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Solution

The fourth proportional to 73,272.15, 109,908.23 and 68,898.15 is: 103,347.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,272.15 : 109,908.23 = 68,898.15 : x
  2. Step 2: Convert to fraction form
    73,272.15/109,908.23 = 68,898.15/x
  3. Step 3: Cross multiply
    73,272.15x = 109,908.23 × 68,898.15
  4. Step 4: Simplify right side
    73,272.15x = 7,572,473,372.28
  5. Step 5: Solve for x
    x = 7,572,473,372.28/73,272.15
  6. Step 6: Final answer
    x = 103,347.23

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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.