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Finding the Fourth Proportional to 333,111.54, 499,662.84 and 80,389.92

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Solution

The fourth proportional to 333,111.54, 499,662.84 and 80,389.92 is: 120,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,111.54 : 499,662.84 = 80,389.92 : x
  2. Step 2: Convert to fraction form
    333,111.54/499,662.84 = 80,389.92/x
  3. Step 3: Cross multiply
    333,111.54x = 499,662.84 × 80,389.92
  4. Step 4: Simplify right side
    333,111.54x = 40,167,855,734.57
  5. Step 5: Solve for x
    x = 40,167,855,734.57/333,111.54
  6. Step 6: Final answer
    x = 120,583.80

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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.