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Finding the Fourth Proportional to 108,349.21, 149,519.03 and 59,949.87

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Solution

The fourth proportional to 108,349.21, 149,519.03 and 59,949.87 is: 82,729.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,349.21 : 149,519.03 = 59,949.87 : x
  2. Step 2: Convert to fraction form
    108,349.21/149,519.03 = 59,949.87/x
  3. Step 3: Cross multiply
    108,349.21x = 149,519.03 × 59,949.87
  4. Step 4: Simplify right side
    108,349.21x = 8,963,646,411.03
  5. Step 5: Solve for x
    x = 8,963,646,411.03/108,349.21
  6. Step 6: Final answer
    x = 82,729.23

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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.