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Finding the Fourth Proportional to 18,906.05, 28,165.06 and 18,053.12

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Solution

The fourth proportional to 18,906.05, 28,165.06 and 18,053.12 is: 26,894.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.05 : 28,165.06 = 18,053.12 : x
  2. Step 2: Convert to fraction form
    18,906.05/28,165.06 = 18,053.12/x
  3. Step 3: Cross multiply
    18,906.05x = 28,165.06 × 18,053.12
  4. Step 4: Simplify right side
    18,906.05x = 508,467,207.99
  5. Step 5: Solve for x
    x = 508,467,207.99/18,906.05
  6. Step 6: Final answer
    x = 26,894.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.