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Finding the Fourth Proportional to 273,115.80, 409,673.70 and 161,141.40

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Solution

The fourth proportional to 273,115.80, 409,673.70 and 161,141.40 is: 241,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,115.80 : 409,673.70 = 161,141.40 : x
  2. Step 2: Convert to fraction form
    273,115.80/409,673.70 = 161,141.40/x
  3. Step 3: Cross multiply
    273,115.80x = 409,673.70 × 161,141.40
  4. Step 4: Simplify right side
    273,115.80x = 66,015,393,561.18
  5. Step 5: Solve for x
    x = 66,015,393,561.18/273,115.80
  6. Step 6: Final answer
    x = 241,712.10

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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.