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Finding the Fourth Proportional to 273,641.40, 410,721.30 and 168,665.40

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Solution

The fourth proportional to 273,641.40, 410,721.30 and 168,665.40 is: 253,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,641.40 : 410,721.30 = 168,665.40 : x
  2. Step 2: Convert to fraction form
    273,641.40/410,721.30 = 168,665.40/x
  3. Step 3: Cross multiply
    273,641.40x = 410,721.30 × 168,665.40
  4. Step 4: Simplify right side
    273,641.40x = 69,274,472,353.02
  5. Step 5: Solve for x
    x = 69,274,472,353.02/273,641.40
  6. Step 6: Final answer
    x = 253,157.86

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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.