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Finding the Fourth Proportional to 414,618.88, 621,126.60 and 347,259.28

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Solution

The fourth proportional to 414,618.88, 621,126.60 and 347,259.28 is: 520,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,618.88 : 621,126.60 = 347,259.28 : x
  2. Step 2: Convert to fraction form
    414,618.88/621,126.60 = 347,259.28/x
  3. Step 3: Cross multiply
    414,618.88x = 621,126.60 × 347,259.28
  4. Step 4: Simplify right side
    414,618.88x = 215,691,975,904.85
  5. Step 5: Solve for x
    x = 215,691,975,904.85/414,618.88
  6. Step 6: Final answer
    x = 520,217.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.