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Finding the Fourth Proportional to 47,392.78, 65,401.99 and 26,172

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Solution

The fourth proportional to 47,392.78, 65,401.99 and 26,172 is: 36,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,392.78 : 65,401.99 = 26,172 : x
  2. Step 2: Convert to fraction form
    47,392.78/65,401.99 = 26,172/x
  3. Step 3: Cross multiply
    47,392.78x = 65,401.99 × 26,172
  4. Step 4: Simplify right side
    47,392.78x = 1,711,700,882.28
  5. Step 5: Solve for x
    x = 1,711,700,882.28/47,392.78
  6. Step 6: Final answer
    x = 36,117.33

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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.