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Finding the Fourth Proportional to 108,558.09, 149,807.48 and 60,811.11

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Solution

The fourth proportional to 108,558.09, 149,807.48 and 60,811.11 is: 83,917.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,558.09 : 149,807.48 = 60,811.11 : x
  2. Step 2: Convert to fraction form
    108,558.09/149,807.48 = 60,811.11/x
  3. Step 3: Cross multiply
    108,558.09x = 149,807.48 × 60,811.11
  4. Step 4: Simplify right side
    108,558.09x = 9,109,958,841.05
  5. Step 5: Solve for x
    x = 9,109,958,841.05/108,558.09
  6. Step 6: Final answer
    x = 83,917.83

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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.