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Finding the Fourth Proportional to 493,470.72, 680,990.40 and 267,117.12

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Solution

The fourth proportional to 493,470.72, 680,990.40 and 267,117.12 is: 368,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,470.72 : 680,990.40 = 267,117.12 : x
  2. Step 2: Convert to fraction form
    493,470.72/680,990.40 = 267,117.12/x
  3. Step 3: Cross multiply
    493,470.72x = 680,990.40 × 267,117.12
  4. Step 4: Simplify right side
    493,470.72x = 181,904,194,395.65
  5. Step 5: Solve for x
    x = 181,904,194,395.65/493,470.72
  6. Step 6: Final answer
    x = 368,622.06

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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.