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Finding the Fourth Proportional to 88,990.70, 122,805.05 and 48,704.40

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Solution

The fourth proportional to 88,990.70, 122,805.05 and 48,704.40 is: 67,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,990.70 : 122,805.05 = 48,704.40 : x
  2. Step 2: Convert to fraction form
    88,990.70/122,805.05 = 48,704.40/x
  3. Step 3: Cross multiply
    88,990.70x = 122,805.05 × 48,704.40
  4. Step 4: Simplify right side
    88,990.70x = 5,981,146,033.70
  5. Step 5: Solve for x
    x = 5,981,146,033.70/88,990.70
  6. Step 6: Final answer
    x = 67,210.91

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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.