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Finding the Fourth Proportional to 505,797.67, 698,000.25 and 290,932.21

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Solution

The fourth proportional to 505,797.67, 698,000.25 and 290,932.21 is: 401,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,797.67 : 698,000.25 = 290,932.21 : x
  2. Step 2: Convert to fraction form
    505,797.67/698,000.25 = 290,932.21/x
  3. Step 3: Cross multiply
    505,797.67x = 698,000.25 × 290,932.21
  4. Step 4: Simplify right side
    505,797.67x = 203,070,755,313.05
  5. Step 5: Solve for x
    x = 203,070,755,313.05/505,797.67
  6. Step 6: Final answer
    x = 401,486.14

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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.