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Finding the Fourth Proportional to 68,972.92, 103,406.93 and 35,671.76

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Solution

The fourth proportional to 68,972.92, 103,406.93 and 35,671.76 is: 53,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,972.92 : 103,406.93 = 35,671.76 : x
  2. Step 2: Convert to fraction form
    68,972.92/103,406.93 = 35,671.76/x
  3. Step 3: Cross multiply
    68,972.92x = 103,406.93 × 35,671.76
  4. Step 4: Simplify right side
    68,972.92x = 3,688,707,015.45
  5. Step 5: Solve for x
    x = 3,688,707,015.45/68,972.92
  6. Step 6: Final answer
    x = 53,480.51

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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.