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Finding the Fourth Proportional to 19,506.84, 26,919.90 and 11,124.12

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Solution

The fourth proportional to 19,506.84, 26,919.90 and 11,124.12 is: 15,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,506.84 : 26,919.90 = 11,124.12 : x
  2. Step 2: Convert to fraction form
    19,506.84/26,919.90 = 11,124.12/x
  3. Step 3: Cross multiply
    19,506.84x = 26,919.90 × 11,124.12
  4. Step 4: Simplify right side
    19,506.84x = 299,460,197.99
  5. Step 5: Solve for x
    x = 299,460,197.99/19,506.84
  6. Step 6: Final answer
    x = 15,351.55

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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.