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Finding the Fourth Proportional to 22,691.86, 31,293.03 and 15,022.99

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Solution

The fourth proportional to 22,691.86, 31,293.03 and 15,022.99 is: 20,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.86 : 31,293.03 = 15,022.99 : x
  2. Step 2: Convert to fraction form
    22,691.86/31,293.03 = 15,022.99/x
  3. Step 3: Cross multiply
    22,691.86x = 31,293.03 × 15,022.99
  4. Step 4: Simplify right side
    22,691.86x = 470,114,876.76
  5. Step 5: Solve for x
    x = 470,114,876.76/22,691.86
  6. Step 6: Final answer
    x = 20,717.34

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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.