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Finding the Fourth Proportional to 18,935.22, 26,131.80 and 10,551.72

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Solution

The fourth proportional to 18,935.22, 26,131.80 and 10,551.72 is: 14,562.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.22 : 26,131.80 = 10,551.72 : x
  2. Step 2: Convert to fraction form
    18,935.22/26,131.80 = 10,551.72/x
  3. Step 3: Cross multiply
    18,935.22x = 26,131.80 × 10,551.72
  4. Step 4: Simplify right side
    18,935.22x = 275,735,436.70
  5. Step 5: Solve for x
    x = 275,735,436.70/18,935.22
  6. Step 6: Final answer
    x = 14,562.04

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1.5x scale

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.