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Finding the Fourth Proportional to 108,716.16, 150,044.70 and 66,299.30

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Solution

The fourth proportional to 108,716.16, 150,044.70 and 66,299.30 is: 91,503.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,716.16 : 150,044.70 = 66,299.30 : x
  2. Step 2: Convert to fraction form
    108,716.16/150,044.70 = 66,299.30/x
  3. Step 3: Cross multiply
    108,716.16x = 150,044.70 × 66,299.30
  4. Step 4: Simplify right side
    108,716.16x = 9,947,857,828.49
  5. Step 5: Solve for x
    x = 9,947,857,828.49/108,716.16
  6. Step 6: Final answer
    x = 91,503.03

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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.