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Finding the Fourth Proportional to 262,391.54, 393,490.91 and 93,866.18

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Solution

The fourth proportional to 262,391.54, 393,490.91 and 93,866.18 is: 140,764.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,391.54 : 393,490.91 = 93,866.18 : x
  2. Step 2: Convert to fraction form
    262,391.54/393,490.91 = 93,866.18/x
  3. Step 3: Cross multiply
    262,391.54x = 393,490.91 × 93,866.18
  4. Step 4: Simplify right side
    262,391.54x = 36,935,486,853.63
  5. Step 5: Solve for x
    x = 36,935,486,853.63/262,391.54
  6. Step 6: Final answer
    x = 140,764.78

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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.