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Finding the Fourth Proportional to 8,471.04, 11,688.67 and 5,325

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Solution

The fourth proportional to 8,471.04, 11,688.67 and 5,325 is: 7,347.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.04 : 11,688.67 = 5,325 : x
  2. Step 2: Convert to fraction form
    8,471.04/11,688.67 = 5,325/x
  3. Step 3: Cross multiply
    8,471.04x = 11,688.67 × 5,325
  4. Step 4: Simplify right side
    8,471.04x = 62,242,167.75
  5. Step 5: Solve for x
    x = 62,242,167.75/8,471.04
  6. Step 6: Final answer
    x = 7,347.64

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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.