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Finding the Fourth Proportional to 19,483.68, 26,889.60 and 11,934.96

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Solution

The fourth proportional to 19,483.68, 26,889.60 and 11,934.96 is: 16,471.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,483.68 : 26,889.60 = 11,934.96 : x
  2. Step 2: Convert to fraction form
    19,483.68/26,889.60 = 11,934.96/x
  3. Step 3: Cross multiply
    19,483.68x = 26,889.60 × 11,934.96
  4. Step 4: Simplify right side
    19,483.68x = 320,926,300.42
  5. Step 5: Solve for x
    x = 320,926,300.42/19,483.68
  6. Step 6: Final answer
    x = 16,471.54

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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.