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Finding the Fourth Proportional to 21,755.55, 32,617.37 and 6,955.95

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Solution

The fourth proportional to 21,755.55, 32,617.37 and 6,955.95 is: 10,428.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,755.55 : 32,617.37 = 6,955.95 : x
  2. Step 2: Convert to fraction form
    21,755.55/32,617.37 = 6,955.95/x
  3. Step 3: Cross multiply
    21,755.55x = 32,617.37 × 6,955.95
  4. Step 4: Simplify right side
    21,755.55x = 226,884,794.85
  5. Step 5: Solve for x
    x = 226,884,794.85/21,755.55
  6. Step 6: Final answer
    x = 10,428.82

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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.