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Finding the Fourth Proportional to 57,794.69, 86,717.07 and 20,381.49

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Solution

The fourth proportional to 57,794.69, 86,717.07 and 20,381.49 is: 30,581.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,794.69 : 86,717.07 = 20,381.49 : x
  2. Step 2: Convert to fraction form
    57,794.69/86,717.07 = 20,381.49/x
  3. Step 3: Cross multiply
    57,794.69x = 86,717.07 × 20,381.49
  4. Step 4: Simplify right side
    57,794.69x = 1,767,423,095.03
  5. Step 5: Solve for x
    x = 1,767,423,095.03/57,794.69
  6. Step 6: Final answer
    x = 30,581.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.