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Finding the Fourth Proportional to 72,808.66, 109,228.57 and 41,233.64

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Solution

The fourth proportional to 72,808.66, 109,228.57 and 41,233.64 is: 61,859.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,808.66 : 109,228.57 = 41,233.64 : x
  2. Step 2: Convert to fraction form
    72,808.66/109,228.57 = 41,233.64/x
  3. Step 3: Cross multiply
    72,808.66x = 109,228.57 × 41,233.64
  4. Step 4: Simplify right side
    72,808.66x = 4,503,891,703.08
  5. Step 5: Solve for x
    x = 4,503,891,703.08/72,808.66
  6. Step 6: Final answer
    x = 61,859.29

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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.