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Finding the Fourth Proportional to 500,873.10, 691,200.99 and 274,518.06

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Solution

The fourth proportional to 500,873.10, 691,200.99 and 274,518.06 is: 378,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,873.10 : 691,200.99 = 274,518.06 : x
  2. Step 2: Convert to fraction form
    500,873.10/691,200.99 = 274,518.06/x
  3. Step 3: Cross multiply
    500,873.10x = 691,200.99 × 274,518.06
  4. Step 4: Simplify right side
    500,873.10x = 189,747,154,844.88
  5. Step 5: Solve for x
    x = 189,747,154,844.88/500,873.10
  6. Step 6: Final answer
    x = 378,832.79

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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.