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Finding the Fourth Proportional to 68,718.68, 103,013.36 and 37,081.32

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Solution

The fourth proportional to 68,718.68, 103,013.36 and 37,081.32 is: 55,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,718.68 : 103,013.36 = 37,081.32 : x
  2. Step 2: Convert to fraction form
    68,718.68/103,013.36 = 37,081.32/x
  3. Step 3: Cross multiply
    68,718.68x = 103,013.36 × 37,081.32
  4. Step 4: Simplify right side
    68,718.68x = 3,819,871,181.03
  5. Step 5: Solve for x
    x = 3,819,871,181.03/68,718.68
  6. Step 6: Final answer
    x = 55,587.09

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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.