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Finding the Fourth Proportional to 8,662.10, 11,953.70 and 4,683.20

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Solution

The fourth proportional to 8,662.10, 11,953.70 and 4,683.20 is: 6,462.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.10 : 11,953.70 = 4,683.20 : x
  2. Step 2: Convert to fraction form
    8,662.10/11,953.70 = 4,683.20/x
  3. Step 3: Cross multiply
    8,662.10x = 11,953.70 × 4,683.20
  4. Step 4: Simplify right side
    8,662.10x = 55,981,567.84
  5. Step 5: Solve for x
    x = 55,981,567.84/8,662.10
  6. Step 6: Final answer
    x = 6,462.82

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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.