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Finding the Fourth Proportional to 43,326.99, 64,992.79 and 13,747.14

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Solution

The fourth proportional to 43,326.99, 64,992.79 and 13,747.14 is: 20,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,326.99 : 64,992.79 = 13,747.14 : x
  2. Step 2: Convert to fraction form
    43,326.99/64,992.79 = 13,747.14/x
  3. Step 3: Cross multiply
    43,326.99x = 64,992.79 × 13,747.14
  4. Step 4: Simplify right side
    43,326.99x = 893,464,983.12
  5. Step 5: Solve for x
    x = 893,464,983.12/43,326.99
  6. Step 6: Final answer
    x = 20,621.44

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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.