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Finding the Fourth Proportional to 99,816.80, 149,725.20 and 93,911.90

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Solution

The fourth proportional to 99,816.80, 149,725.20 and 93,911.90 is: 140,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,816.80 : 149,725.20 = 93,911.90 : x
  2. Step 2: Convert to fraction form
    99,816.80/149,725.20 = 93,911.90/x
  3. Step 3: Cross multiply
    99,816.80x = 149,725.20 × 93,911.90
  4. Step 4: Simplify right side
    99,816.80x = 14,060,978,009.88
  5. Step 5: Solve for x
    x = 14,060,978,009.88/99,816.80
  6. Step 6: Final answer
    x = 140,867.85

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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.