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Finding the Fourth Proportional to 79,298.90, 109,441.07 and 50,644.88

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Solution

The fourth proportional to 79,298.90, 109,441.07 and 50,644.88 is: 69,895.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,298.90 : 109,441.07 = 50,644.88 : x
  2. Step 2: Convert to fraction form
    79,298.90/109,441.07 = 50,644.88/x
  3. Step 3: Cross multiply
    79,298.90x = 109,441.07 × 50,644.88
  4. Step 4: Simplify right side
    79,298.90x = 5,542,629,941.99
  5. Step 5: Solve for x
    x = 5,542,629,941.99/79,298.90
  6. Step 6: Final answer
    x = 69,895.42

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1.5x scale

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.