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Finding the Fourth Proportional to 27,291.08, 40,939.05 and 11,705.06

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Solution

The fourth proportional to 27,291.08, 40,939.05 and 11,705.06 is: 17,558.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,291.08 : 40,939.05 = 11,705.06 : x
  2. Step 2: Convert to fraction form
    27,291.08/40,939.05 = 11,705.06/x
  3. Step 3: Cross multiply
    27,291.08x = 40,939.05 × 11,705.06
  4. Step 4: Simplify right side
    27,291.08x = 479,194,036.59
  5. Step 5: Solve for x
    x = 479,194,036.59/27,291.08
  6. Step 6: Final answer
    x = 17,558.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.