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Finding the Fourth Proportional to 505,244.12, 697,236.78 and 278,889.56

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Solution

The fourth proportional to 505,244.12, 697,236.78 and 278,889.56 is: 384,867.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,244.12 : 697,236.78 = 278,889.56 : x
  2. Step 2: Convert to fraction form
    505,244.12/697,236.78 = 278,889.56/x
  3. Step 3: Cross multiply
    505,244.12x = 697,236.78 × 278,889.56
  4. Step 4: Simplify right side
    505,244.12x = 194,452,058,790.02
  5. Step 5: Solve for x
    x = 194,452,058,790.02/505,244.12
  6. Step 6: Final answer
    x = 384,867.53

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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.