Home / 66,517.16-99,792.30-19,768.76

Finding the Fourth Proportional to 66,517.16, 99,792.30 and 19,768.76

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Solution

The fourth proportional to 66,517.16, 99,792.30 and 19,768.76 is: 29,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.16 : 99,792.30 = 19,768.76 : x
  2. Step 2: Convert to fraction form
    66,517.16/99,792.30 = 19,768.76/x
  3. Step 3: Cross multiply
    66,517.16x = 99,792.30 × 19,768.76
  4. Step 4: Simplify right side
    66,517.16x = 1,972,770,028.55
  5. Step 5: Solve for x
    x = 1,972,770,028.55/66,517.16
  6. Step 6: Final answer
    x = 29,658.06

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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.