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Finding the Fourth Proportional to 417,187.11, 622,273.46 and 378,874.32

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Solution

The fourth proportional to 417,187.11, 622,273.46 and 378,874.32 is: 565,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,187.11 : 622,273.46 = 378,874.32 : x
  2. Step 2: Convert to fraction form
    417,187.11/622,273.46 = 378,874.32/x
  3. Step 3: Cross multiply
    417,187.11x = 622,273.46 × 378,874.32
  4. Step 4: Simplify right side
    417,187.11x = 235,763,434,011.55
  5. Step 5: Solve for x
    x = 235,763,434,011.55/417,187.11
  6. Step 6: Final answer
    x = 565,126.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.