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Finding the Fourth Proportional to 11,369.97, 15,691.59 and 6,894.86

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Solution

The fourth proportional to 11,369.97, 15,691.59 and 6,894.86 is: 9,515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,369.97 : 15,691.59 = 6,894.86 : x
  2. Step 2: Convert to fraction form
    11,369.97/15,691.59 = 6,894.86/x
  3. Step 3: Cross multiply
    11,369.97x = 15,691.59 × 6,894.86
  4. Step 4: Simplify right side
    11,369.97x = 108,191,237.77
  5. Step 5: Solve for x
    x = 108,191,237.77/11,369.97
  6. Step 6: Final answer
    x = 9,515.53

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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.