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Finding the Fourth Proportional to 10,626.61, 15,929.53 and 3,958.22

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Solution

The fourth proportional to 10,626.61, 15,929.53 and 3,958.22 is: 5,933.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,626.61 : 15,929.53 = 3,958.22 : x
  2. Step 2: Convert to fraction form
    10,626.61/15,929.53 = 3,958.22/x
  3. Step 3: Cross multiply
    10,626.61x = 15,929.53 × 3,958.22
  4. Step 4: Simplify right side
    10,626.61x = 63,052,646.24
  5. Step 5: Solve for x
    x = 63,052,646.24/10,626.61
  6. Step 6: Final answer
    x = 5,933.47

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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.