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Finding the Fourth Proportional to 66,247.80, 99,350.64 and 21,866.28

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Solution

The fourth proportional to 66,247.80, 99,350.64 and 21,866.28 is: 32,792.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,247.80 : 99,350.64 = 21,866.28 : x
  2. Step 2: Convert to fraction form
    66,247.80/99,350.64 = 21,866.28/x
  3. Step 3: Cross multiply
    66,247.80x = 99,350.64 × 21,866.28
  4. Step 4: Simplify right side
    66,247.80x = 2,172,428,912.42
  5. Step 5: Solve for x
    x = 2,172,428,912.42/66,247.80
  6. Step 6: Final answer
    x = 32,792.47

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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.