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Finding the Fourth Proportional to 526,486.11, 789,728.55 and 171,499.56

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Solution

The fourth proportional to 526,486.11, 789,728.55 and 171,499.56 is: 257,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,486.11 : 789,728.55 = 171,499.56 : x
  2. Step 2: Convert to fraction form
    526,486.11/789,728.55 = 171,499.56/x
  3. Step 3: Cross multiply
    526,486.11x = 789,728.55 × 171,499.56
  4. Step 4: Simplify right side
    526,486.11x = 135,438,098,844.44
  5. Step 5: Solve for x
    x = 135,438,098,844.44/526,486.11
  6. Step 6: Final answer
    x = 257,249.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.