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Finding the Fourth Proportional to 11,238.56, 16,860.24 and 4,313

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Solution

The fourth proportional to 11,238.56, 16,860.24 and 4,313 is: 6,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.56 : 16,860.24 = 4,313 : x
  2. Step 2: Convert to fraction form
    11,238.56/16,860.24 = 4,313/x
  3. Step 3: Cross multiply
    11,238.56x = 16,860.24 × 4,313
  4. Step 4: Simplify right side
    11,238.56x = 72,718,215.12
  5. Step 5: Solve for x
    x = 72,718,215.12/11,238.56
  6. Step 6: Final answer
    x = 6,470.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.