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Finding the Fourth Proportional to 89,596.71, 134,478.21 and 45,254.61

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Solution

The fourth proportional to 89,596.71, 134,478.21 and 45,254.61 is: 67,923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,596.71 : 134,478.21 = 45,254.61 : x
  2. Step 2: Convert to fraction form
    89,596.71/134,478.21 = 45,254.61/x
  3. Step 3: Cross multiply
    89,596.71x = 134,478.21 × 45,254.61
  4. Step 4: Simplify right side
    89,596.71x = 6,085,758,947.05
  5. Step 5: Solve for x
    x = 6,085,758,947.05/89,596.71
  6. Step 6: Final answer
    x = 67,923.91

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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.