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Finding the Fourth Proportional to 333,891.74, 500,830.31 and 81,173.56

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Solution

The fourth proportional to 333,891.74, 500,830.31 and 81,173.56 is: 121,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,891.74 : 500,830.31 = 81,173.56 : x
  2. Step 2: Convert to fraction form
    333,891.74/500,830.31 = 81,173.56/x
  3. Step 3: Cross multiply
    333,891.74x = 500,830.31 × 81,173.56
  4. Step 4: Simplify right side
    333,891.74x = 40,654,178,812.74
  5. Step 5: Solve for x
    x = 40,654,178,812.74/333,891.74
  6. Step 6: Final answer
    x = 121,758.56

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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.