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Finding the Fourth Proportional to 108,242.73, 149,382.28 and 62,920.58

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Solution

The fourth proportional to 108,242.73, 149,382.28 and 62,920.58 is: 86,834.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,242.73 : 149,382.28 = 62,920.58 : x
  2. Step 2: Convert to fraction form
    108,242.73/149,382.28 = 62,920.58/x
  3. Step 3: Cross multiply
    108,242.73x = 149,382.28 × 62,920.58
  4. Step 4: Simplify right side
    108,242.73x = 9,399,219,208.03
  5. Step 5: Solve for x
    x = 9,399,219,208.03/108,242.73
  6. Step 6: Final answer
    x = 86,834.64

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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.