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Finding the Fourth Proportional to 79,268.83, 109,390.95 and 43,458.07

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Solution

The fourth proportional to 79,268.83, 109,390.95 and 43,458.07 is: 59,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,268.83 : 109,390.95 = 43,458.07 : x
  2. Step 2: Convert to fraction form
    79,268.83/109,390.95 = 43,458.07/x
  3. Step 3: Cross multiply
    79,268.83x = 109,390.95 × 43,458.07
  4. Step 4: Simplify right side
    79,268.83x = 4,753,919,862.17
  5. Step 5: Solve for x
    x = 4,753,919,862.17/79,268.83
  6. Step 6: Final answer
    x = 59,972.12

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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.