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Finding the Fourth Proportional to 66,553.40, 91,748.28 and 41,042.63

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Solution

The fourth proportional to 66,553.40, 91,748.28 and 41,042.63 is: 56,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.40 : 91,748.28 = 41,042.63 : x
  2. Step 2: Convert to fraction form
    66,553.40/91,748.28 = 41,042.63/x
  3. Step 3: Cross multiply
    66,553.40x = 91,748.28 × 41,042.63
  4. Step 4: Simplify right side
    66,553.40x = 3,765,590,709.18
  5. Step 5: Solve for x
    x = 3,765,590,709.18/66,553.40
  6. Step 6: Final answer
    x = 56,579.99

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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.