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Finding the Fourth Proportional to 18,567, 25,623.48 and 11,017.80

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Solution

The fourth proportional to 18,567, 25,623.48 and 11,017.80 is: 15,205.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,567 : 25,623.48 = 11,017.80 : x
  2. Step 2: Convert to fraction form
    18,567/25,623.48 = 11,017.80/x
  3. Step 3: Cross multiply
    18,567x = 25,623.48 × 11,017.80
  4. Step 4: Simplify right side
    18,567x = 282,314,377.94
  5. Step 5: Solve for x
    x = 282,314,377.94/18,567
  6. Step 6: Final answer
    x = 15,205.17

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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.