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Finding the Fourth Proportional to 18,897.91, 26,080.79 and 11,344.52

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Solution

The fourth proportional to 18,897.91, 26,080.79 and 11,344.52 is: 15,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.91 : 26,080.79 = 11,344.52 : x
  2. Step 2: Convert to fraction form
    18,897.91/26,080.79 = 11,344.52/x
  3. Step 3: Cross multiply
    18,897.91x = 26,080.79 × 11,344.52
  4. Step 4: Simplify right side
    18,897.91x = 295,874,052.25
  5. Step 5: Solve for x
    x = 295,874,052.25/18,897.91
  6. Step 6: Final answer
    x = 15,656.45

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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.