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Finding the Fourth Proportional to 353,257.79, 487,491.17 and 192,109.41

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Solution

The fourth proportional to 353,257.79, 487,491.17 and 192,109.41 is: 265,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,257.79 : 487,491.17 = 192,109.41 : x
  2. Step 2: Convert to fraction form
    353,257.79/487,491.17 = 192,109.41/x
  3. Step 3: Cross multiply
    353,257.79x = 487,491.17 × 192,109.41
  4. Step 4: Simplify right side
    353,257.79x = 93,651,640,088.36
  5. Step 5: Solve for x
    x = 93,651,640,088.36/353,257.79
  6. Step 6: Final answer
    x = 265,108.49

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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.