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Finding the Fourth Proportional to 88,921.32, 122,709.69 and 48,634.96

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Solution

The fourth proportional to 88,921.32, 122,709.69 and 48,634.96 is: 67,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,921.32 : 122,709.69 = 48,634.96 : x
  2. Step 2: Convert to fraction form
    88,921.32/122,709.69 = 48,634.96/x
  3. Step 3: Cross multiply
    88,921.32x = 122,709.69 × 48,634.96
  4. Step 4: Simplify right side
    88,921.32x = 5,967,980,864.76
  5. Step 5: Solve for x
    x = 5,967,980,864.76/88,921.32
  6. Step 6: Final answer
    x = 67,115.30

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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.