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Finding the Fourth Proportional to 89,898.46, 124,106.51 and 65,672.22

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Solution

The fourth proportional to 89,898.46, 124,106.51 and 65,672.22 is: 90,661.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,898.46 : 124,106.51 = 65,672.22 : x
  2. Step 2: Convert to fraction form
    89,898.46/124,106.51 = 65,672.22/x
  3. Step 3: Cross multiply
    89,898.46x = 124,106.51 × 65,672.22
  4. Step 4: Simplify right side
    89,898.46x = 8,150,350,123.98
  5. Step 5: Solve for x
    x = 8,150,350,123.98/89,898.46
  6. Step 6: Final answer
    x = 90,661.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.