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Finding the Fourth Proportional to 505,677.33, 697,855.92 and 290,817.56

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Solution

The fourth proportional to 505,677.33, 697,855.92 and 290,817.56 is: 401,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,677.33 : 697,855.92 = 290,817.56 : x
  2. Step 2: Convert to fraction form
    505,677.33/697,855.92 = 290,817.56/x
  3. Step 3: Cross multiply
    505,677.33x = 697,855.92 × 290,817.56
  4. Step 4: Simplify right side
    505,677.33x = 202,948,756,540.03
  5. Step 5: Solve for x
    x = 202,948,756,540.03/505,677.33
  6. Step 6: Final answer
    x = 401,340.43

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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.