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Finding the Fourth Proportional to 68,908.92, 103,362.16 and 39,263.52

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Solution

The fourth proportional to 68,908.92, 103,362.16 and 39,263.52 is: 58,894.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,908.92 : 103,362.16 = 39,263.52 : x
  2. Step 2: Convert to fraction form
    68,908.92/103,362.16 = 39,263.52/x
  3. Step 3: Cross multiply
    68,908.92x = 103,362.16 × 39,263.52
  4. Step 4: Simplify right side
    68,908.92x = 4,058,362,236.40
  5. Step 5: Solve for x
    x = 4,058,362,236.40/68,908.92
  6. Step 6: Final answer
    x = 58,894.58

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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.