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Finding the Fourth Proportional to 108,967.77, 150,359.58 and 61,211.61

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Solution

The fourth proportional to 108,967.77, 150,359.58 and 61,211.61 is: 84,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,967.77 : 150,359.58 = 61,211.61 : x
  2. Step 2: Convert to fraction form
    108,967.77/150,359.58 = 61,211.61/x
  3. Step 3: Cross multiply
    108,967.77x = 150,359.58 × 61,211.61
  4. Step 4: Simplify right side
    108,967.77x = 9,203,751,970.72
  5. Step 5: Solve for x
    x = 9,203,751,970.72/108,967.77
  6. Step 6: Final answer
    x = 84,463.07

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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.