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Finding the Fourth Proportional to 11,167.71, 15,410.19 and 6,628.77

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Solution

The fourth proportional to 11,167.71, 15,410.19 and 6,628.77 is: 9,146.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.71 : 15,410.19 = 6,628.77 : x
  2. Step 2: Convert to fraction form
    11,167.71/15,410.19 = 6,628.77/x
  3. Step 3: Cross multiply
    11,167.71x = 15,410.19 × 6,628.77
  4. Step 4: Simplify right side
    11,167.71x = 102,150,605.17
  5. Step 5: Solve for x
    x = 102,150,605.17/11,167.71
  6. Step 6: Final answer
    x = 9,146.96

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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.