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Finding the Fourth Proportional to 104,639.52, 156,943.92 and 34,509.84

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Solution

The fourth proportional to 104,639.52, 156,943.92 and 34,509.84 is: 51,759.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,639.52 : 156,943.92 = 34,509.84 : x
  2. Step 2: Convert to fraction form
    104,639.52/156,943.92 = 34,509.84/x
  3. Step 3: Cross multiply
    104,639.52x = 156,943.92 × 34,509.84
  4. Step 4: Simplify right side
    104,639.52x = 5,416,109,568.17
  5. Step 5: Solve for x
    x = 5,416,109,568.17/104,639.52
  6. Step 6: Final answer
    x = 51,759.69

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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.