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Finding the Fourth Proportional to 19,506.67, 26,928.80 and 15,250.22

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Solution

The fourth proportional to 19,506.67, 26,928.80 and 15,250.22 is: 21,052.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,506.67 : 26,928.80 = 15,250.22 : x
  2. Step 2: Convert to fraction form
    19,506.67/26,928.80 = 15,250.22/x
  3. Step 3: Cross multiply
    19,506.67x = 26,928.80 × 15,250.22
  4. Step 4: Simplify right side
    19,506.67x = 410,670,308.87
  5. Step 5: Solve for x
    x = 410,670,308.87/19,506.67
  6. Step 6: Final answer
    x = 21,052.81

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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.