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Finding the Fourth Proportional to 333,889.99, 500,827.68 and 81,171.81

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Solution

The fourth proportional to 333,889.99, 500,827.68 and 81,171.81 is: 121,755.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,889.99 : 500,827.68 = 81,171.81 : x
  2. Step 2: Convert to fraction form
    333,889.99/500,827.68 = 81,171.81/x
  3. Step 3: Cross multiply
    333,889.99x = 500,827.68 × 81,171.81
  4. Step 4: Simplify right side
    333,889.99x = 40,653,089,283.70
  5. Step 5: Solve for x
    x = 40,653,089,283.70/333,889.99
  6. Step 6: Final answer
    x = 121,755.94

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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.