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Finding the Fourth Proportional to 15,859.70, 23,790.78 and 4,765.52

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Solution

The fourth proportional to 15,859.70, 23,790.78 and 4,765.52 is: 7,148.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.70 : 23,790.78 = 4,765.52 : x
  2. Step 2: Convert to fraction form
    15,859.70/23,790.78 = 4,765.52/x
  3. Step 3: Cross multiply
    15,859.70x = 23,790.78 × 4,765.52
  4. Step 4: Simplify right side
    15,859.70x = 113,375,437.91
  5. Step 5: Solve for x
    x = 113,375,437.91/15,859.70
  6. Step 6: Final answer
    x = 7,148.65

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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.