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Finding the Fourth Proportional to 40,647.72, 60,972.66 and 11,066.16

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Solution

The fourth proportional to 40,647.72, 60,972.66 and 11,066.16 is: 16,599.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,647.72 : 60,972.66 = 11,066.16 : x
  2. Step 2: Convert to fraction form
    40,647.72/60,972.66 = 11,066.16/x
  3. Step 3: Cross multiply
    40,647.72x = 60,972.66 × 11,066.16
  4. Step 4: Simplify right side
    40,647.72x = 674,733,391.28
  5. Step 5: Solve for x
    x = 674,733,391.28/40,647.72
  6. Step 6: Final answer
    x = 16,599.54

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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.