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Finding the Fourth Proportional to 18,626.96, 25,703.68 and 10,969.02

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Solution

The fourth proportional to 18,626.96, 25,703.68 and 10,969.02 is: 15,136.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.96 : 25,703.68 = 10,969.02 : x
  2. Step 2: Convert to fraction form
    18,626.96/25,703.68 = 10,969.02/x
  3. Step 3: Cross multiply
    18,626.96x = 25,703.68 × 10,969.02
  4. Step 4: Simplify right side
    18,626.96x = 281,944,179.99
  5. Step 5: Solve for x
    x = 281,944,179.99/18,626.96
  6. Step 6: Final answer
    x = 15,136.35

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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.