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Finding the Fourth Proportional to 11,365.76, 15,684.74 and 6,650.96

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Solution

The fourth proportional to 11,365.76, 15,684.74 and 6,650.96 is: 9,178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,365.76 : 15,684.74 = 6,650.96 : x
  2. Step 2: Convert to fraction form
    11,365.76/15,684.74 = 6,650.96/x
  3. Step 3: Cross multiply
    11,365.76x = 15,684.74 × 6,650.96
  4. Step 4: Simplify right side
    11,365.76x = 104,318,578.35
  5. Step 5: Solve for x
    x = 104,318,578.35/11,365.76
  6. Step 6: Final answer
    x = 9,178.32

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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.