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Finding the Fourth Proportional to 613,919.91, 847,234.99 and 341,987.72

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Solution

The fourth proportional to 613,919.91, 847,234.99 and 341,987.72 is: 471,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,919.91 : 847,234.99 = 341,987.72 : x
  2. Step 2: Convert to fraction form
    613,919.91/847,234.99 = 341,987.72/x
  3. Step 3: Cross multiply
    613,919.91x = 847,234.99 × 341,987.72
  4. Step 4: Simplify right side
    613,919.91x = 289,743,963,491.33
  5. Step 5: Solve for x
    x = 289,743,963,491.33/613,919.91
  6. Step 6: Final answer
    x = 471,957.27

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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.