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Finding the Fourth Proportional to 66,309.17, 99,462.78 and 16,389.27

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Solution

The fourth proportional to 66,309.17, 99,462.78 and 16,389.27 is: 24,583.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.17 : 99,462.78 = 16,389.27 : x
  2. Step 2: Convert to fraction form
    66,309.17/99,462.78 = 16,389.27/x
  3. Step 3: Cross multiply
    66,309.17x = 99,462.78 × 16,389.27
  4. Step 4: Simplify right side
    66,309.17x = 1,630,122,729.36
  5. Step 5: Solve for x
    x = 1,630,122,729.36/66,309.17
  6. Step 6: Final answer
    x = 24,583.67

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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.