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Finding the Fourth Proportional to 79,485.52, 109,796.22 and 55,690.96

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Solution

The fourth proportional to 79,485.52, 109,796.22 and 55,690.96 is: 76,927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,485.52 : 109,796.22 = 55,690.96 : x
  2. Step 2: Convert to fraction form
    79,485.52/109,796.22 = 55,690.96/x
  3. Step 3: Cross multiply
    79,485.52x = 109,796.22 × 55,690.96
  4. Step 4: Simplify right side
    79,485.52x = 6,114,656,896.17
  5. Step 5: Solve for x
    x = 6,114,656,896.17/79,485.52
  6. Step 6: Final answer
    x = 76,927.93

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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.