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Finding the Fourth Proportional to 108,471.76, 149,693.06 and 60,725.09

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Solution

The fourth proportional to 108,471.76, 149,693.06 and 60,725.09 is: 83,801.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,471.76 : 149,693.06 = 60,725.09 : x
  2. Step 2: Convert to fraction form
    108,471.76/149,693.06 = 60,725.09/x
  3. Step 3: Cross multiply
    108,471.76x = 149,693.06 × 60,725.09
  4. Step 4: Simplify right side
    108,471.76x = 9,090,125,066.92
  5. Step 5: Solve for x
    x = 9,090,125,066.92/108,471.76
  6. Step 6: Final answer
    x = 83,801.77

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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.