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Finding the Fourth Proportional to 11,713.13, 16,164.11 and 6,407.94

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Solution

The fourth proportional to 11,713.13, 16,164.11 and 6,407.94 is: 8,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,713.13 : 16,164.11 = 6,407.94 : x
  2. Step 2: Convert to fraction form
    11,713.13/16,164.11 = 6,407.94/x
  3. Step 3: Cross multiply
    11,713.13x = 16,164.11 × 6,407.94
  4. Step 4: Simplify right side
    11,713.13x = 103,578,551.24
  5. Step 5: Solve for x
    x = 103,578,551.24/11,713.13
  6. Step 6: Final answer
    x = 8,842.94

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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.