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Finding the Fourth Proportional to 108,693.54, 149,997.78 and 60,947.64

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Solution

The fourth proportional to 108,693.54, 149,997.78 and 60,947.64 is: 84,108.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,693.54 : 149,997.78 = 60,947.64 : x
  2. Step 2: Convert to fraction form
    108,693.54/149,997.78 = 60,947.64/x
  3. Step 3: Cross multiply
    108,693.54x = 149,997.78 × 60,947.64
  4. Step 4: Simplify right side
    108,693.54x = 9,142,010,696.24
  5. Step 5: Solve for x
    x = 9,142,010,696.24/108,693.54
  6. Step 6: Final answer
    x = 84,108.13

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1.5x scale

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.