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Finding the Fourth Proportional to 100,793.76, 139,087.29 and 58,355.02

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Solution

The fourth proportional to 100,793.76, 139,087.29 and 58,355.02 is: 80,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,793.76 : 139,087.29 = 58,355.02 : x
  2. Step 2: Convert to fraction form
    100,793.76/139,087.29 = 58,355.02/x
  3. Step 3: Cross multiply
    100,793.76x = 139,087.29 × 58,355.02
  4. Step 4: Simplify right side
    100,793.76x = 8,116,441,589.70
  5. Step 5: Solve for x
    x = 8,116,441,589.70/100,793.76
  6. Step 6: Final answer
    x = 80,525.24

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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.