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Finding the Fourth Proportional to 108,993.30, 150,424.86 and 61,246.66

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Solution

The fourth proportional to 108,993.30, 150,424.86 and 61,246.66 is: 84,528.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,993.30 : 150,424.86 = 61,246.66 : x
  2. Step 2: Convert to fraction form
    108,993.30/150,424.86 = 61,246.66/x
  3. Step 3: Cross multiply
    108,993.30x = 150,424.86 × 61,246.66
  4. Step 4: Simplify right side
    108,993.30x = 9,213,019,451.79
  5. Step 5: Solve for x
    x = 9,213,019,451.79/108,993.30
  6. Step 6: Final answer
    x = 84,528.31

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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.