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Finding the Fourth Proportional to 53,378.67, 80,040.79 and 17,827.20

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Solution

The fourth proportional to 53,378.67, 80,040.79 and 17,827.20 is: 26,731.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,378.67 : 80,040.79 = 17,827.20 : x
  2. Step 2: Convert to fraction form
    53,378.67/80,040.79 = 17,827.20/x
  3. Step 3: Cross multiply
    53,378.67x = 80,040.79 × 17,827.20
  4. Step 4: Simplify right side
    53,378.67x = 1,426,903,171.49
  5. Step 5: Solve for x
    x = 1,426,903,171.49/53,378.67
  6. Step 6: Final answer
    x = 26,731.71

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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.