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Finding the Fourth Proportional to 333,809.79, 500,715.05 and 84,491.79

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Solution

The fourth proportional to 333,809.79, 500,715.05 and 84,491.79 is: 126,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,809.79 : 500,715.05 = 84,491.79 : x
  2. Step 2: Convert to fraction form
    333,809.79/500,715.05 = 84,491.79/x
  3. Step 3: Cross multiply
    333,809.79x = 500,715.05 × 84,491.79
  4. Step 4: Simplify right side
    333,809.79x = 42,306,310,431.98
  5. Step 5: Solve for x
    x = 42,306,310,431.98/333,809.79
  6. Step 6: Final answer
    x = 126,737.78

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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.