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Finding the Fourth Proportional to 68,955.20, 103,484.28 and 51,226.82

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Solution

The fourth proportional to 68,955.20, 103,484.28 and 51,226.82 is: 76,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,955.20 : 103,484.28 = 51,226.82 : x
  2. Step 2: Convert to fraction form
    68,955.20/103,484.28 = 51,226.82/x
  3. Step 3: Cross multiply
    68,955.20x = 103,484.28 × 51,226.82
  4. Step 4: Simplify right side
    68,955.20x = 5,301,170,584.39
  5. Step 5: Solve for x
    x = 5,301,170,584.39/68,955.20
  6. Step 6: Final answer
    x = 76,878.47

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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.