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Finding the Fourth Proportional to 68,938.92, 103,495.88 and 58,616.28

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Solution

The fourth proportional to 68,938.92, 103,495.88 and 58,616.28 is: 87,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,938.92 : 103,495.88 = 58,616.28 : x
  2. Step 2: Convert to fraction form
    68,938.92/103,495.88 = 58,616.28/x
  3. Step 3: Cross multiply
    68,938.92x = 103,495.88 × 58,616.28
  4. Step 4: Simplify right side
    68,938.92x = 6,066,543,187.85
  5. Step 5: Solve for x
    x = 6,066,543,187.85/68,938.92
  6. Step 6: Final answer
    x = 87,998.81

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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.