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Finding the Fourth Proportional to 18,906.24, 26,090.64 and 10,948.92

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Solution

The fourth proportional to 18,906.24, 26,090.64 and 10,948.92 is: 15,109.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.24 : 26,090.64 = 10,948.92 : x
  2. Step 2: Convert to fraction form
    18,906.24/26,090.64 = 10,948.92/x
  3. Step 3: Cross multiply
    18,906.24x = 26,090.64 × 10,948.92
  4. Step 4: Simplify right side
    18,906.24x = 285,664,330.11
  5. Step 5: Solve for x
    x = 285,664,330.11/18,906.24
  6. Step 6: Final answer
    x = 15,109.53

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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.