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Finding the Fourth Proportional to 19,143.30, 26,417.84 and 11,183.84

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Solution

The fourth proportional to 19,143.30, 26,417.84 and 11,183.84 is: 15,433.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.30 : 26,417.84 = 11,183.84 : x
  2. Step 2: Convert to fraction form
    19,143.30/26,417.84 = 11,183.84/x
  3. Step 3: Cross multiply
    19,143.30x = 26,417.84 × 11,183.84
  4. Step 4: Simplify right side
    19,143.30x = 295,452,895.71
  5. Step 5: Solve for x
    x = 295,452,895.71/19,143.30
  6. Step 6: Final answer
    x = 15,433.75

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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.