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Finding the Fourth Proportional to 333,721.92, 500,578.68 and 81,004.52

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Solution

The fourth proportional to 333,721.92, 500,578.68 and 81,004.52 is: 121,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,721.92 : 500,578.68 = 81,004.52 : x
  2. Step 2: Convert to fraction form
    333,721.92/500,578.68 = 81,004.52/x
  3. Step 3: Cross multiply
    333,721.92x = 500,578.68 × 81,004.52
  4. Step 4: Simplify right side
    333,721.92x = 40,549,135,695.63
  5. Step 5: Solve for x
    x = 40,549,135,695.63/333,721.92
  6. Step 6: Final answer
    x = 121,505.76

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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.