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Finding the Fourth Proportional to 8,472.55, 12,712.47 and 4,093.29

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Solution

The fourth proportional to 8,472.55, 12,712.47 and 4,093.29 is: 6,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.55 : 12,712.47 = 4,093.29 : x
  2. Step 2: Convert to fraction form
    8,472.55/12,712.47 = 4,093.29/x
  3. Step 3: Cross multiply
    8,472.55x = 12,712.47 × 4,093.29
  4. Step 4: Simplify right side
    8,472.55x = 52,035,826.33
  5. Step 5: Solve for x
    x = 52,035,826.33/8,472.55
  6. Step 6: Final answer
    x = 6,141.70

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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.