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Finding the Fourth Proportional to 19,619.18, 27,073.90 and 11,122.09

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Solution

The fourth proportional to 19,619.18, 27,073.90 and 11,122.09 is: 15,348.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.18 : 27,073.90 = 11,122.09 : x
  2. Step 2: Convert to fraction form
    19,619.18/27,073.90 = 11,122.09/x
  3. Step 3: Cross multiply
    19,619.18x = 27,073.90 × 11,122.09
  4. Step 4: Simplify right side
    19,619.18x = 301,118,298.67
  5. Step 5: Solve for x
    x = 301,118,298.67/19,619.18
  6. Step 6: Final answer
    x = 15,348.16

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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.