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Finding the Fourth Proportional to 99,520.92, 148,993.59 and 89,253.41

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Solution

The fourth proportional to 99,520.92, 148,993.59 and 89,253.41 is: 133,622.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,520.92 : 148,993.59 = 89,253.41 : x
  2. Step 2: Convert to fraction form
    99,520.92/148,993.59 = 89,253.41/x
  3. Step 3: Cross multiply
    99,520.92x = 148,993.59 × 89,253.41
  4. Step 4: Simplify right side
    99,520.92x = 13,298,185,398.36
  5. Step 5: Solve for x
    x = 13,298,185,398.36/99,520.92
  6. Step 6: Final answer
    x = 133,622.02

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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.