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Finding the Fourth Proportional to 333,782.91, 500,668.89 and 81,065.48

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Solution

The fourth proportional to 333,782.91, 500,668.89 and 81,065.48 is: 121,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,782.91 : 500,668.89 = 81,065.48 : x
  2. Step 2: Convert to fraction form
    333,782.91/500,668.89 = 81,065.48/x
  3. Step 3: Cross multiply
    333,782.91x = 500,668.89 × 81,065.48
  4. Step 4: Simplify right side
    333,782.91x = 40,586,961,385.57
  5. Step 5: Solve for x
    x = 40,586,961,385.57/333,782.91
  6. Step 6: Final answer
    x = 121,596.88

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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.