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Finding the Fourth Proportional to 19,411.63, 26,788.04 and 11,028.13

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Solution

The fourth proportional to 19,411.63, 26,788.04 and 11,028.13 is: 15,218.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.63 : 26,788.04 = 11,028.13 : x
  2. Step 2: Convert to fraction form
    19,411.63/26,788.04 = 11,028.13/x
  3. Step 3: Cross multiply
    19,411.63x = 26,788.04 × 11,028.13
  4. Step 4: Simplify right side
    19,411.63x = 295,421,987.57
  5. Step 5: Solve for x
    x = 295,421,987.57/19,411.63
  6. Step 6: Final answer
    x = 15,218.81

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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.