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Finding the Fourth Proportional to 279,621.70, 419,760.60 and 277,653.40

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Solution

The fourth proportional to 279,621.70, 419,760.60 and 277,653.40 is: 416,805.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,621.70 : 419,760.60 = 277,653.40 : x
  2. Step 2: Convert to fraction form
    279,621.70/419,760.60 = 277,653.40/x
  3. Step 3: Cross multiply
    279,621.70x = 419,760.60 × 277,653.40
  4. Step 4: Simplify right side
    279,621.70x = 116,547,957,776.04
  5. Step 5: Solve for x
    x = 116,547,957,776.04/279,621.70
  6. Step 6: Final answer
    x = 416,805.84

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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.