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Finding the Fourth Proportional to 66,361.16, 99,481.58 and 33,091.42

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Solution

The fourth proportional to 66,361.16, 99,481.58 and 33,091.42 is: 49,607.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361.16 : 99,481.58 = 33,091.42 : x
  2. Step 2: Convert to fraction form
    66,361.16/99,481.58 = 33,091.42/x
  3. Step 3: Cross multiply
    66,361.16x = 99,481.58 × 33,091.42
  4. Step 4: Simplify right side
    66,361.16x = 3,291,986,746.04
  5. Step 5: Solve for x
    x = 3,291,986,746.04/66,361.16
  6. Step 6: Final answer
    x = 49,607.13

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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.