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Finding the Fourth Proportional to 17,868.69, 24,642.65 and 11,154.94

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Solution

The fourth proportional to 17,868.69, 24,642.65 and 11,154.94 is: 15,383.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,868.69 : 24,642.65 = 11,154.94 : x
  2. Step 2: Convert to fraction form
    17,868.69/24,642.65 = 11,154.94/x
  3. Step 3: Cross multiply
    17,868.69x = 24,642.65 × 11,154.94
  4. Step 4: Simplify right side
    17,868.69x = 274,887,145.03
  5. Step 5: Solve for x
    x = 274,887,145.03/17,868.69
  6. Step 6: Final answer
    x = 15,383.73

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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.