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Finding the Fourth Proportional to 79,268.90, 109,390.65 and 43,460.42

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Solution

The fourth proportional to 79,268.90, 109,390.65 and 43,460.42 is: 59,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,268.90 : 109,390.65 = 43,460.42 : x
  2. Step 2: Convert to fraction form
    79,268.90/109,390.65 = 43,460.42/x
  3. Step 3: Cross multiply
    79,268.90x = 109,390.65 × 43,460.42
  4. Step 4: Simplify right side
    79,268.90x = 4,754,163,593.07
  5. Step 5: Solve for x
    x = 4,754,163,593.07/79,268.90
  6. Step 6: Final answer
    x = 59,975.14

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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.