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Finding the Fourth Proportional to 43,057.56, 64,578.90 and 11,468.04

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Solution

The fourth proportional to 43,057.56, 64,578.90 and 11,468.04 is: 17,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,057.56 : 64,578.90 = 11,468.04 : x
  2. Step 2: Convert to fraction form
    43,057.56/64,578.90 = 11,468.04/x
  3. Step 3: Cross multiply
    43,057.56x = 64,578.90 × 11,468.04
  4. Step 4: Simplify right side
    43,057.56x = 740,593,408.36
  5. Step 5: Solve for x
    x = 740,593,408.36/43,057.56
  6. Step 6: Final answer
    x = 17,200.08

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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.