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Finding the Fourth Proportional to 11,447.76, 15,800.52 and 9,581.52

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Solution

The fourth proportional to 11,447.76, 15,800.52 and 9,581.52 is: 13,224.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,447.76 : 15,800.52 = 9,581.52 : x
  2. Step 2: Convert to fraction form
    11,447.76/15,800.52 = 9,581.52/x
  3. Step 3: Cross multiply
    11,447.76x = 15,800.52 × 9,581.52
  4. Step 4: Simplify right side
    11,447.76x = 151,392,998.39
  5. Step 5: Solve for x
    x = 151,392,998.39/11,447.76
  6. Step 6: Final answer
    x = 13,224.68

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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.