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Finding the Fourth Proportional to 11,167.73, 15,406.53 and 6,917.66

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Solution

The fourth proportional to 11,167.73, 15,406.53 and 6,917.66 is: 9,543.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.73 : 15,406.53 = 6,917.66 : x
  2. Step 2: Convert to fraction form
    11,167.73/15,406.53 = 6,917.66/x
  3. Step 3: Cross multiply
    11,167.73x = 15,406.53 × 6,917.66
  4. Step 4: Simplify right side
    11,167.73x = 106,577,059.29
  5. Step 5: Solve for x
    x = 106,577,059.29/11,167.73
  6. Step 6: Final answer
    x = 9,543.31

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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.