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Finding the Fourth Proportional to 19,992.55, 27,590.97 and 11,040.01

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Solution

The fourth proportional to 19,992.55, 27,590.97 and 11,040.01 is: 15,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.55 : 27,590.97 = 11,040.01 : x
  2. Step 2: Convert to fraction form
    19,992.55/27,590.97 = 11,040.01/x
  3. Step 3: Cross multiply
    19,992.55x = 27,590.97 × 11,040.01
  4. Step 4: Simplify right side
    19,992.55x = 304,604,584.71
  5. Step 5: Solve for x
    x = 304,604,584.71/19,992.55
  6. Step 6: Final answer
    x = 15,235.90

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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.