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Finding the Fourth Proportional to 641,553.41, 885,540.89 and 369,802.94

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Solution

The fourth proportional to 641,553.41, 885,540.89 and 369,802.94 is: 510,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,553.41 : 885,540.89 = 369,802.94 : x
  2. Step 2: Convert to fraction form
    641,553.41/885,540.89 = 369,802.94/x
  3. Step 3: Cross multiply
    641,553.41x = 885,540.89 × 369,802.94
  4. Step 4: Simplify right side
    641,553.41x = 327,475,621,109.02
  5. Step 5: Solve for x
    x = 327,475,621,109.02/641,553.41
  6. Step 6: Final answer
    x = 510,441.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.