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Finding the Fourth Proportional to 14,751.63, 20,356.43 and 8,464.01

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Solution

The fourth proportional to 14,751.63, 20,356.43 and 8,464.01 is: 11,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,751.63 : 20,356.43 = 8,464.01 : x
  2. Step 2: Convert to fraction form
    14,751.63/20,356.43 = 8,464.01/x
  3. Step 3: Cross multiply
    14,751.63x = 20,356.43 × 8,464.01
  4. Step 4: Simplify right side
    14,751.63x = 172,296,882.98
  5. Step 5: Solve for x
    x = 172,296,882.98/14,751.63
  6. Step 6: Final answer
    x = 11,679.85

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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.