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Finding the Fourth Proportional to 505,662.90, 697,817.16 and 276,223.38

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Solution

The fourth proportional to 505,662.90, 697,817.16 and 276,223.38 is: 381,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,662.90 : 697,817.16 = 276,223.38 : x
  2. Step 2: Convert to fraction form
    505,662.90/697,817.16 = 276,223.38/x
  3. Step 3: Cross multiply
    505,662.90x = 697,817.16 × 276,223.38
  4. Step 4: Simplify right side
    505,662.90x = 192,753,414,557.20
  5. Step 5: Solve for x
    x = 192,753,414,557.20/505,662.90
  6. Step 6: Final answer
    x = 381,189.55

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1.5x scale

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.