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Finding the Fourth Proportional to 19,629.69, 27,089.69 and 11,247.81

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Solution

The fourth proportional to 19,629.69, 27,089.69 and 11,247.81 is: 15,522.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,629.69 : 27,089.69 = 11,247.81 : x
  2. Step 2: Convert to fraction form
    19,629.69/27,089.69 = 11,247.81/x
  3. Step 3: Cross multiply
    19,629.69x = 27,089.69 × 11,247.81
  4. Step 4: Simplify right side
    19,629.69x = 304,699,686.08
  5. Step 5: Solve for x
    x = 304,699,686.08/19,629.69
  6. Step 6: Final answer
    x = 15,522.39

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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.