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Finding the Fourth Proportional to 8,712.76, 12,023.91 and 4,936.03

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Solution

The fourth proportional to 8,712.76, 12,023.91 and 4,936.03 is: 6,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.76 : 12,023.91 = 4,936.03 : x
  2. Step 2: Convert to fraction form
    8,712.76/12,023.91 = 4,936.03/x
  3. Step 3: Cross multiply
    8,712.76x = 12,023.91 × 4,936.03
  4. Step 4: Simplify right side
    8,712.76x = 59,350,320.36
  5. Step 5: Solve for x
    x = 59,350,320.36/8,712.76
  6. Step 6: Final answer
    x = 6,811.89

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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.