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Finding the Fourth Proportional to 66,776.97, 100,170.66 and 19,392.83

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Solution

The fourth proportional to 66,776.97, 100,170.66 and 19,392.83 is: 29,090.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,776.97 : 100,170.66 = 19,392.83 : x
  2. Step 2: Convert to fraction form
    66,776.97/100,170.66 = 19,392.83/x
  3. Step 3: Cross multiply
    66,776.97x = 100,170.66 × 19,392.83
  4. Step 4: Simplify right side
    66,776.97x = 1,942,592,982.25
  5. Step 5: Solve for x
    x = 1,942,592,982.25/66,776.97
  6. Step 6: Final answer
    x = 29,090.76

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1.5x scale

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.