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Finding the Fourth Proportional to 18,995.05, 26,209.11 and 11,033.16

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Solution

The fourth proportional to 18,995.05, 26,209.11 and 11,033.16 is: 15,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.05 : 26,209.11 = 11,033.16 : x
  2. Step 2: Convert to fraction form
    18,995.05/26,209.11 = 11,033.16/x
  3. Step 3: Cross multiply
    18,995.05x = 26,209.11 × 11,033.16
  4. Step 4: Simplify right side
    18,995.05x = 289,169,304.09
  5. Step 5: Solve for x
    x = 289,169,304.09/18,995.05
  6. Step 6: Final answer
    x = 15,223.40

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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.