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Finding the Fourth Proportional to 72,873.60, 109,063.49 and 44,811.42

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Solution

The fourth proportional to 72,873.60, 109,063.49 and 44,811.42 is: 67,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,873.60 : 109,063.49 = 44,811.42 : x
  2. Step 2: Convert to fraction form
    72,873.60/109,063.49 = 44,811.42/x
  3. Step 3: Cross multiply
    72,873.60x = 109,063.49 × 44,811.42
  4. Step 4: Simplify right side
    72,873.60x = 4,887,289,857.06
  5. Step 5: Solve for x
    x = 4,887,289,857.06/72,873.60
  6. Step 6: Final answer
    x = 67,065.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.