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Finding the Fourth Proportional to 27,722.70, 41,555.70 and 13,661.10

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Solution

The fourth proportional to 27,722.70, 41,555.70 and 13,661.10 is: 20,477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.70 : 41,555.70 = 13,661.10 : x
  2. Step 2: Convert to fraction form
    27,722.70/41,555.70 = 13,661.10/x
  3. Step 3: Cross multiply
    27,722.70x = 41,555.70 × 13,661.10
  4. Step 4: Simplify right side
    27,722.70x = 567,696,573.27
  5. Step 5: Solve for x
    x = 567,696,573.27/27,722.70
  6. Step 6: Final answer
    x = 20,477.68

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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.