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Finding the Fourth Proportional to 414,458.70, 621,662.67 and 243,774.80

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Solution

The fourth proportional to 414,458.70, 621,662.67 and 243,774.80 is: 365,647.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,458.70 : 621,662.67 = 243,774.80 : x
  2. Step 2: Convert to fraction form
    414,458.70/621,662.67 = 243,774.80/x
  3. Step 3: Cross multiply
    414,458.70x = 621,662.67 × 243,774.80
  4. Step 4: Simplify right side
    414,458.70x = 151,545,694,600.87
  5. Step 5: Solve for x
    x = 151,545,694,600.87/414,458.70
  6. Step 6: Final answer
    x = 365,647.28

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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.