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Finding the Fourth Proportional to 18,556.76, 27,835.32 and 4,705.76

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Solution

The fourth proportional to 18,556.76, 27,835.32 and 4,705.76 is: 7,058.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.76 : 27,835.32 = 4,705.76 : x
  2. Step 2: Convert to fraction form
    18,556.76/27,835.32 = 4,705.76/x
  3. Step 3: Cross multiply
    18,556.76x = 27,835.32 × 4,705.76
  4. Step 4: Simplify right side
    18,556.76x = 130,986,335.44
  5. Step 5: Solve for x
    x = 130,986,335.44/18,556.76
  6. Step 6: Final answer
    x = 7,058.69

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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.