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Finding the Fourth Proportional to 27,877.32, 38,470.44 and 15,301.80

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Solution

The fourth proportional to 27,877.32, 38,470.44 and 15,301.80 is: 21,116.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,877.32 : 38,470.44 = 15,301.80 : x
  2. Step 2: Convert to fraction form
    27,877.32/38,470.44 = 15,301.80/x
  3. Step 3: Cross multiply
    27,877.32x = 38,470.44 × 15,301.80
  4. Step 4: Simplify right side
    27,877.32x = 588,666,978.79
  5. Step 5: Solve for x
    x = 588,666,978.79/27,877.32
  6. Step 6: Final answer
    x = 21,116.34

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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.