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Finding the Fourth Proportional to 171,305.16, 236,388.38 and 99,672.80

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Solution

The fourth proportional to 171,305.16, 236,388.38 and 99,672.80 is: 137,541.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,305.16 : 236,388.38 = 99,672.80 : x
  2. Step 2: Convert to fraction form
    171,305.16/236,388.38 = 99,672.80/x
  3. Step 3: Cross multiply
    171,305.16x = 236,388.38 × 99,672.80
  4. Step 4: Simplify right side
    171,305.16x = 23,561,491,722.06
  5. Step 5: Solve for x
    x = 23,561,491,722.06/171,305.16
  6. Step 6: Final answer
    x = 137,541.05

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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.