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Finding the Fourth Proportional to 11,333.25, 15,639.12 and 6,859.49

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Solution

The fourth proportional to 11,333.25, 15,639.12 and 6,859.49 is: 9,465.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,333.25 : 15,639.12 = 6,859.49 : x
  2. Step 2: Convert to fraction form
    11,333.25/15,639.12 = 6,859.49/x
  3. Step 3: Cross multiply
    11,333.25x = 15,639.12 × 6,859.49
  4. Step 4: Simplify right side
    11,333.25x = 107,276,309.05
  5. Step 5: Solve for x
    x = 107,276,309.05/11,333.25
  6. Step 6: Final answer
    x = 9,465.63

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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.