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Finding the Fourth Proportional to 112,066.74, 154,652.09 and 61,765.74

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Solution

The fourth proportional to 112,066.74, 154,652.09 and 61,765.74 is: 85,236.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,066.74 : 154,652.09 = 61,765.74 : x
  2. Step 2: Convert to fraction form
    112,066.74/154,652.09 = 61,765.74/x
  3. Step 3: Cross multiply
    112,066.74x = 154,652.09 × 61,765.74
  4. Step 4: Simplify right side
    112,066.74x = 9,552,200,472.57
  5. Step 5: Solve for x
    x = 9,552,200,472.57/112,066.74
  6. Step 6: Final answer
    x = 85,236.71

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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.