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Finding the Fourth Proportional to 274,554, 378,890.92 and 153,692.24

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Solution

The fourth proportional to 274,554, 378,890.92 and 153,692.24 is: 212,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,554 : 378,890.92 = 153,692.24 : x
  2. Step 2: Convert to fraction form
    274,554/378,890.92 = 153,692.24/x
  3. Step 3: Cross multiply
    274,554x = 378,890.92 × 153,692.24
  4. Step 4: Simplify right side
    274,554x = 58,232,594,210.46
  5. Step 5: Solve for x
    x = 58,232,594,210.46/274,554
  6. Step 6: Final answer
    x = 212,098.87

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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.