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Finding the Fourth Proportional to 58,047.78, 87,084.48 and 18,608.88

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Solution

The fourth proportional to 58,047.78, 87,084.48 and 18,608.88 is: 27,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,047.78 : 87,084.48 = 18,608.88 : x
  2. Step 2: Convert to fraction form
    58,047.78/87,084.48 = 18,608.88/x
  3. Step 3: Cross multiply
    58,047.78x = 87,084.48 × 18,608.88
  4. Step 4: Simplify right side
    58,047.78x = 1,620,544,638.18
  5. Step 5: Solve for x
    x = 1,620,544,638.18/58,047.78
  6. Step 6: Final answer
    x = 27,917.43

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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.