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Finding the Fourth Proportional to 18,699.93, 25,805.97 and 10,202.13

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Solution

The fourth proportional to 18,699.93, 25,805.97 and 10,202.13 is: 14,078.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.93 : 25,805.97 = 10,202.13 : x
  2. Step 2: Convert to fraction form
    18,699.93/25,805.97 = 10,202.13/x
  3. Step 3: Cross multiply
    18,699.93x = 25,805.97 × 10,202.13
  4. Step 4: Simplify right side
    18,699.93x = 263,275,860.72
  5. Step 5: Solve for x
    x = 263,275,860.72/18,699.93
  6. Step 6: Final answer
    x = 14,078.98

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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.