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Finding the Fourth Proportional to 79,490.95, 109,699.04 and 43,678.82

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Solution

The fourth proportional to 79,490.95, 109,699.04 and 43,678.82 is: 60,277.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,490.95 : 109,699.04 = 43,678.82 : x
  2. Step 2: Convert to fraction form
    79,490.95/109,699.04 = 43,678.82/x
  3. Step 3: Cross multiply
    79,490.95x = 109,699.04 × 43,678.82
  4. Step 4: Simplify right side
    79,490.95x = 4,791,524,622.33
  5. Step 5: Solve for x
    x = 4,791,524,622.33/79,490.95
  6. Step 6: Final answer
    x = 60,277.61

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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.