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Finding the Fourth Proportional to 11,129.80, 15,358.53 and 6,093.76

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Solution

The fourth proportional to 11,129.80, 15,358.53 and 6,093.76 is: 8,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.80 : 15,358.53 = 6,093.76 : x
  2. Step 2: Convert to fraction form
    11,129.80/15,358.53 = 6,093.76/x
  3. Step 3: Cross multiply
    11,129.80x = 15,358.53 × 6,093.76
  4. Step 4: Simplify right side
    11,129.80x = 93,591,195.77
  5. Step 5: Solve for x
    x = 93,591,195.77/11,129.80
  6. Step 6: Final answer
    x = 8,409.06

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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.