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Finding the Fourth Proportional to 439,686, 606,766.72 and 248,695.28

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Solution

The fourth proportional to 439,686, 606,766.72 and 248,695.28 is: 343,199.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,686 : 606,766.72 = 248,695.28 : x
  2. Step 2: Convert to fraction form
    439,686/606,766.72 = 248,695.28/x
  3. Step 3: Cross multiply
    439,686x = 606,766.72 × 248,695.28
  4. Step 4: Simplify right side
    439,686x = 150,900,019,325.08
  5. Step 5: Solve for x
    x = 150,900,019,325.08/439,686
  6. Step 6: Final answer
    x = 343,199.51

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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.