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Finding the Fourth Proportional to 505,248.12, 697,242.30 and 278,893.56

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Solution

The fourth proportional to 505,248.12, 697,242.30 and 278,893.56 is: 384,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,248.12 : 697,242.30 = 278,893.56 : x
  2. Step 2: Convert to fraction form
    505,248.12/697,242.30 = 278,893.56/x
  3. Step 3: Cross multiply
    505,248.12x = 697,242.30 × 278,893.56
  4. Step 4: Simplify right side
    505,248.12x = 194,456,387,229.59
  5. Step 5: Solve for x
    x = 194,456,387,229.59/505,248.12
  6. Step 6: Final answer
    x = 384,873.05

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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.