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Finding the Fourth Proportional to 19,554.99, 26,989.62 and 11,601.60

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Solution

The fourth proportional to 19,554.99, 26,989.62 and 11,601.60 is: 16,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,554.99 : 26,989.62 = 11,601.60 : x
  2. Step 2: Convert to fraction form
    19,554.99/26,989.62 = 11,601.60/x
  3. Step 3: Cross multiply
    19,554.99x = 26,989.62 × 11,601.60
  4. Step 4: Simplify right side
    19,554.99x = 313,122,775.39
  5. Step 5: Solve for x
    x = 313,122,775.39/19,554.99
  6. Step 6: Final answer
    x = 16,012.42

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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.