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Finding the Fourth Proportional to 79,673.88, 109,949.36 and 43,864.50

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Solution

The fourth proportional to 79,673.88, 109,949.36 and 43,864.50 is: 60,532.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,673.88 : 109,949.36 = 43,864.50 : x
  2. Step 2: Convert to fraction form
    79,673.88/109,949.36 = 43,864.50/x
  3. Step 3: Cross multiply
    79,673.88x = 109,949.36 × 43,864.50
  4. Step 4: Simplify right side
    79,673.88x = 4,822,873,482.40
  5. Step 5: Solve for x
    x = 4,822,873,482.40/79,673.88
  6. Step 6: Final answer
    x = 60,532.68

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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.