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Finding the Fourth Proportional to 170,856.73, 256,189.11 and 70,949.71

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Solution

The fourth proportional to 170,856.73, 256,189.11 and 70,949.71 is: 106,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,856.73 : 256,189.11 = 70,949.71 : x
  2. Step 2: Convert to fraction form
    170,856.73/256,189.11 = 70,949.71/x
  3. Step 3: Cross multiply
    170,856.73x = 256,189.11 × 70,949.71
  4. Step 4: Simplify right side
    170,856.73x = 18,176,543,059.66
  5. Step 5: Solve for x
    x = 18,176,543,059.66/170,856.73
  6. Step 6: Final answer
    x = 106,384.71

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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.