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Finding the Fourth Proportional to 66,238.31, 99,333.16 and 21,851.93

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Solution

The fourth proportional to 66,238.31, 99,333.16 and 21,851.93 is: 32,769.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,238.31 : 99,333.16 = 21,851.93 : x
  2. Step 2: Convert to fraction form
    66,238.31/99,333.16 = 21,851.93/x
  3. Step 3: Cross multiply
    66,238.31x = 99,333.16 × 21,851.93
  4. Step 4: Simplify right side
    66,238.31x = 2,170,621,452.70
  5. Step 5: Solve for x
    x = 2,170,621,452.70/66,238.31
  6. Step 6: Final answer
    x = 32,769.88

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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.