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Finding the Fourth Proportional to 88,786.80, 133,179.84 and 42,072.48

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Solution

The fourth proportional to 88,786.80, 133,179.84 and 42,072.48 is: 63,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,786.80 : 133,179.84 = 42,072.48 : x
  2. Step 2: Convert to fraction form
    88,786.80/133,179.84 = 42,072.48/x
  3. Step 3: Cross multiply
    88,786.80x = 133,179.84 × 42,072.48
  4. Step 4: Simplify right side
    88,786.80x = 5,603,206,154.80
  5. Step 5: Solve for x
    x = 5,603,206,154.80/88,786.80
  6. Step 6: Final answer
    x = 63,108.55

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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.