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Finding the Fourth Proportional to 83,178.98, 114,786.60 and 45,453.26

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Solution

The fourth proportional to 83,178.98, 114,786.60 and 45,453.26 is: 62,725.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,178.98 : 114,786.60 = 45,453.26 : x
  2. Step 2: Convert to fraction form
    83,178.98/114,786.60 = 45,453.26/x
  3. Step 3: Cross multiply
    83,178.98x = 114,786.60 × 45,453.26
  4. Step 4: Simplify right side
    83,178.98x = 5,217,425,174.32
  5. Step 5: Solve for x
    x = 5,217,425,174.32/83,178.98
  6. Step 6: Final answer
    x = 62,725.28

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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.