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Finding the Fourth Proportional to 41,955.64, 62,972.34 and 21,193.72

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Solution

The fourth proportional to 41,955.64, 62,972.34 and 21,193.72 is: 31,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,955.64 : 62,972.34 = 21,193.72 : x
  2. Step 2: Convert to fraction form
    41,955.64/62,972.34 = 21,193.72/x
  3. Step 3: Cross multiply
    41,955.64x = 62,972.34 × 21,193.72
  4. Step 4: Simplify right side
    41,955.64x = 1,334,618,141.70
  5. Step 5: Solve for x
    x = 1,334,618,141.70/41,955.64
  6. Step 6: Final answer
    x = 31,810.22

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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.