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Finding the Fourth Proportional to 18,086.99, 24,963.54 and 10,918.09

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Solution

The fourth proportional to 18,086.99, 24,963.54 and 10,918.09 is: 15,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,086.99 : 24,963.54 = 10,918.09 : x
  2. Step 2: Convert to fraction form
    18,086.99/24,963.54 = 10,918.09/x
  3. Step 3: Cross multiply
    18,086.99x = 24,963.54 × 10,918.09
  4. Step 4: Simplify right side
    18,086.99x = 272,554,051.62
  5. Step 5: Solve for x
    x = 272,554,051.62/18,086.99
  6. Step 6: Final answer
    x = 15,069.07

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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.