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Finding the Fourth Proportional to 18,726.77, 28,082.36 and 7,625.93

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Solution

The fourth proportional to 18,726.77, 28,082.36 and 7,625.93 is: 11,435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.77 : 28,082.36 = 7,625.93 : x
  2. Step 2: Convert to fraction form
    18,726.77/28,082.36 = 7,625.93/x
  3. Step 3: Cross multiply
    18,726.77x = 28,082.36 × 7,625.93
  4. Step 4: Simplify right side
    18,726.77x = 214,153,933.05
  5. Step 5: Solve for x
    x = 214,153,933.05/18,726.77
  6. Step 6: Final answer
    x = 11,435.71

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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.