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Finding the Fourth Proportional to 99,015.75, 148,392.41 and 82,482.03

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Solution

The fourth proportional to 99,015.75, 148,392.41 and 82,482.03 is: 123,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,015.75 : 148,392.41 = 82,482.03 : x
  2. Step 2: Convert to fraction form
    99,015.75/148,392.41 = 82,482.03/x
  3. Step 3: Cross multiply
    99,015.75x = 148,392.41 × 82,482.03
  4. Step 4: Simplify right side
    99,015.75x = 12,239,706,800.98
  5. Step 5: Solve for x
    x = 12,239,706,800.98/99,015.75
  6. Step 6: Final answer
    x = 123,613.74

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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.