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Finding the Fourth Proportional to 19,236.99, 28,855.19 and 15,943.13

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Solution

The fourth proportional to 19,236.99, 28,855.19 and 15,943.13 is: 23,914.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,236.99 : 28,855.19 = 15,943.13 : x
  2. Step 2: Convert to fraction form
    19,236.99/28,855.19 = 15,943.13/x
  3. Step 3: Cross multiply
    19,236.99x = 28,855.19 × 15,943.13
  4. Step 4: Simplify right side
    19,236.99x = 460,041,959.45
  5. Step 5: Solve for x
    x = 460,041,959.45/19,236.99
  6. Step 6: Final answer
    x = 23,914.44

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.