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Finding the Fourth Proportional to 8,729.87, 12,046.86 and 4,750.98

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Solution

The fourth proportional to 8,729.87, 12,046.86 and 4,750.98 is: 6,556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.87 : 12,046.86 = 4,750.98 : x
  2. Step 2: Convert to fraction form
    8,729.87/12,046.86 = 4,750.98/x
  3. Step 3: Cross multiply
    8,729.87x = 12,046.86 × 4,750.98
  4. Step 4: Simplify right side
    8,729.87x = 57,234,390.92
  5. Step 5: Solve for x
    x = 57,234,390.92/8,729.87
  6. Step 6: Final answer
    x = 6,556.16

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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.