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Finding the Fourth Proportional to 439,684, 606,764 and 248,693.28

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Solution

The fourth proportional to 439,684, 606,764 and 248,693.28 is: 343,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,684 : 606,764 = 248,693.28 : x
  2. Step 2: Convert to fraction form
    439,684/606,764 = 248,693.28/x
  3. Step 3: Cross multiply
    439,684x = 606,764 × 248,693.28
  4. Step 4: Simplify right side
    439,684x = 150,898,129,345.92
  5. Step 5: Solve for x
    x = 150,898,129,345.92/439,684
  6. Step 6: Final answer
    x = 343,196.77

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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.