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Finding the Fourth Proportional to 66,361.99, 91,576.31 and 37,677.89

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Solution

The fourth proportional to 66,361.99, 91,576.31 and 37,677.89 is: 51,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361.99 : 91,576.31 = 37,677.89 : x
  2. Step 2: Convert to fraction form
    66,361.99/91,576.31 = 37,677.89/x
  3. Step 3: Cross multiply
    66,361.99x = 91,576.31 × 37,677.89
  4. Step 4: Simplify right side
    66,361.99x = 3,450,401,973.22
  5. Step 5: Solve for x
    x = 3,450,401,973.22/66,361.99
  6. Step 6: Final answer
    x = 51,993.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.