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Finding the Fourth Proportional to 108,615.78, 149,895.99 and 60,884.70

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Solution

The fourth proportional to 108,615.78, 149,895.99 and 60,884.70 is: 84,024.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,615.78 : 149,895.99 = 60,884.70 : x
  2. Step 2: Convert to fraction form
    108,615.78/149,895.99 = 60,884.70/x
  3. Step 3: Cross multiply
    108,615.78x = 149,895.99 × 60,884.70
  4. Step 4: Simplify right side
    108,615.78x = 9,126,372,382.35
  5. Step 5: Solve for x
    x = 9,126,372,382.35/108,615.78
  6. Step 6: Final answer
    x = 84,024.37

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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.