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Finding the Fourth Proportional to 108,956.57, 150,359.16 and 61,208.89

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Solution

The fourth proportional to 108,956.57, 150,359.16 and 61,208.89 is: 84,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,956.57 : 150,359.16 = 61,208.89 : x
  2. Step 2: Convert to fraction form
    108,956.57/150,359.16 = 61,208.89/x
  3. Step 3: Cross multiply
    108,956.57x = 150,359.16 × 61,208.89
  4. Step 4: Simplify right side
    108,956.57x = 9,203,317,284.93
  5. Step 5: Solve for x
    x = 9,203,317,284.93/108,956.57
  6. Step 6: Final answer
    x = 84,467.76

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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.