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Finding the Fourth Proportional to 7,173.29, 9,905.67 and 5,401.82

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Solution

The fourth proportional to 7,173.29, 9,905.67 and 5,401.82 is: 7,459.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.29 : 9,905.67 = 5,401.82 : x
  2. Step 2: Convert to fraction form
    7,173.29/9,905.67 = 5,401.82/x
  3. Step 3: Cross multiply
    7,173.29x = 9,905.67 × 5,401.82
  4. Step 4: Simplify right side
    7,173.29x = 53,508,596.79
  5. Step 5: Solve for x
    x = 53,508,596.79/7,173.29
  6. Step 6: Final answer
    x = 7,459.43

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1.5x scale

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.