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Finding the Fourth Proportional to 108,666.41, 149,959.55 and 60,919.77

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Solution

The fourth proportional to 108,666.41, 149,959.55 and 60,919.77 is: 84,069.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,666.41 : 149,959.55 = 60,919.77 : x
  2. Step 2: Convert to fraction form
    108,666.41/149,959.55 = 60,919.77/x
  3. Step 3: Cross multiply
    108,666.41x = 149,959.55 × 60,919.77
  4. Step 4: Simplify right side
    108,666.41x = 9,135,500,990.70
  5. Step 5: Solve for x
    x = 9,135,500,990.70/108,666.41
  6. Step 6: Final answer
    x = 84,069.23

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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.