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Finding the Fourth Proportional to 18,593.40, 27,758.07 and 17,815.80

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Solution

The fourth proportional to 18,593.40, 27,758.07 and 17,815.80 is: 26,597.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.40 : 27,758.07 = 17,815.80 : x
  2. Step 2: Convert to fraction form
    18,593.40/27,758.07 = 17,815.80/x
  3. Step 3: Cross multiply
    18,593.40x = 27,758.07 × 17,815.80
  4. Step 4: Simplify right side
    18,593.40x = 494,532,223.51
  5. Step 5: Solve for x
    x = 494,532,223.51/18,593.40
  6. Step 6: Final answer
    x = 26,597.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.