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Finding the Fourth Proportional to 66,328.31, 91,530 and 36,113.54

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Solution

The fourth proportional to 66,328.31, 91,530 and 36,113.54 is: 49,835.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,328.31 : 91,530 = 36,113.54 : x
  2. Step 2: Convert to fraction form
    66,328.31/91,530 = 36,113.54/x
  3. Step 3: Cross multiply
    66,328.31x = 91,530 × 36,113.54
  4. Step 4: Simplify right side
    66,328.31x = 3,305,471,858.55
  5. Step 5: Solve for x
    x = 3,305,471,858.55/66,328.31
  6. Step 6: Final answer
    x = 49,835.01

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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.