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Finding the Fourth Proportional to 640,183.68, 883,488.92 and 353,697.62

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Solution

The fourth proportional to 640,183.68, 883,488.92 and 353,697.62 is: 488,122.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,183.68 : 883,488.92 = 353,697.62 : x
  2. Step 2: Convert to fraction form
    640,183.68/883,488.92 = 353,697.62/x
  3. Step 3: Cross multiply
    640,183.68x = 883,488.92 × 353,697.62
  4. Step 4: Simplify right side
    640,183.68x = 312,487,926,091.65
  5. Step 5: Solve for x
    x = 312,487,926,091.65/640,183.68
  6. Step 6: Final answer
    x = 488,122.29

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1.5x scale

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.