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Finding the Fourth Proportional to 439,756.86, 606,878.01 and 248,766.42

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Solution

The fourth proportional to 439,756.86, 606,878.01 and 248,766.42 is: 343,305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,756.86 : 606,878.01 = 248,766.42 : x
  2. Step 2: Convert to fraction form
    439,756.86/606,878.01 = 248,766.42/x
  3. Step 3: Cross multiply
    439,756.86x = 606,878.01 × 248,766.42
  4. Step 4: Simplify right side
    439,756.86x = 150,970,869,924.42
  5. Step 5: Solve for x
    x = 150,970,869,924.42/439,756.86
  6. Step 6: Final answer
    x = 343,305.32

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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.