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Finding the Fourth Proportional to 108,427.92, 149,629.46 and 60,681.62

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Solution

The fourth proportional to 108,427.92, 149,629.46 and 60,681.62 is: 83,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,427.92 : 149,629.46 = 60,681.62 : x
  2. Step 2: Convert to fraction form
    108,427.92/149,629.46 = 60,681.62/x
  3. Step 3: Cross multiply
    108,427.92x = 149,629.46 × 60,681.62
  4. Step 4: Simplify right side
    108,427.92x = 9,079,756,980.97
  5. Step 5: Solve for x
    x = 9,079,756,980.97/108,427.92
  6. Step 6: Final answer
    x = 83,740.03

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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.