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Finding the Fourth Proportional to 28,080.54, 38,692.08 and 19,112.22

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Solution

The fourth proportional to 28,080.54, 38,692.08 and 19,112.22 is: 26,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.54 : 38,692.08 = 19,112.22 : x
  2. Step 2: Convert to fraction form
    28,080.54/38,692.08 = 19,112.22/x
  3. Step 3: Cross multiply
    28,080.54x = 38,692.08 × 19,112.22
  4. Step 4: Simplify right side
    28,080.54x = 739,491,545.22
  5. Step 5: Solve for x
    x = 739,491,545.22/28,080.54
  6. Step 6: Final answer
    x = 26,334.66

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Half scale
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Double scale
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Similar ratio
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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.