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Finding the Fourth Proportional to 66,360, 91,576.80 and 36,552

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Solution

The fourth proportional to 66,360, 91,576.80 and 36,552 is: 50,441.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,360 : 91,576.80 = 36,552 : x
  2. Step 2: Convert to fraction form
    66,360/91,576.80 = 36,552/x
  3. Step 3: Cross multiply
    66,360x = 91,576.80 × 36,552
  4. Step 4: Simplify right side
    66,360x = 3,347,315,193.60
  5. Step 5: Solve for x
    x = 3,347,315,193.60/66,360
  6. Step 6: Final answer
    x = 50,441.76

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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.