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Finding the Fourth Proportional to 68,797.76, 103,181.28 and 28,831.04

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Solution

The fourth proportional to 68,797.76, 103,181.28 and 28,831.04 is: 43,240.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,797.76 : 103,181.28 = 28,831.04 : x
  2. Step 2: Convert to fraction form
    68,797.76/103,181.28 = 28,831.04/x
  3. Step 3: Cross multiply
    68,797.76x = 103,181.28 × 28,831.04
  4. Step 4: Simplify right side
    68,797.76x = 2,974,823,610.93
  5. Step 5: Solve for x
    x = 2,974,823,610.93/68,797.76
  6. Step 6: Final answer
    x = 43,240.12

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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.