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Finding the Fourth Proportional to 18,292.53, 27,438.17 and 7,755.77

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Solution

The fourth proportional to 18,292.53, 27,438.17 and 7,755.77 is: 11,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.53 : 27,438.17 = 7,755.77 : x
  2. Step 2: Convert to fraction form
    18,292.53/27,438.17 = 7,755.77/x
  3. Step 3: Cross multiply
    18,292.53x = 27,438.17 × 7,755.77
  4. Step 4: Simplify right side
    18,292.53x = 212,804,135.74
  5. Step 5: Solve for x
    x = 212,804,135.74/18,292.53
  6. Step 6: Final answer
    x = 11,633.39

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1.5x scale

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.