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Finding the Fourth Proportional to 88,045.77, 132,078.90 and 31,912.32

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Solution

The fourth proportional to 88,045.77, 132,078.90 and 31,912.32 is: 47,872.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,045.77 : 132,078.90 = 31,912.32 : x
  2. Step 2: Convert to fraction form
    88,045.77/132,078.90 = 31,912.32/x
  3. Step 3: Cross multiply
    88,045.77x = 132,078.90 × 31,912.32
  4. Step 4: Simplify right side
    88,045.77x = 4,214,944,122.05
  5. Step 5: Solve for x
    x = 4,214,944,122.05/88,045.77
  6. Step 6: Final answer
    x = 47,872.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.