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Finding the Fourth Proportional to 88,990.76, 122,805.60 and 48,703.70

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Solution

The fourth proportional to 88,990.76, 122,805.60 and 48,703.70 is: 67,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,990.76 : 122,805.60 = 48,703.70 : x
  2. Step 2: Convert to fraction form
    88,990.76/122,805.60 = 48,703.70/x
  3. Step 3: Cross multiply
    88,990.76x = 122,805.60 × 48,703.70
  4. Step 4: Simplify right side
    88,990.76x = 5,981,087,100.72
  5. Step 5: Solve for x
    x = 5,981,087,100.72/88,990.76
  6. Step 6: Final answer
    x = 67,210.20

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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.