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Finding the Fourth Proportional to 526,585.36, 789,727.16 and 171,630.40

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Solution

The fourth proportional to 526,585.36, 789,727.16 and 171,630.40 is: 257,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,585.36 : 789,727.16 = 171,630.40 : x
  2. Step 2: Convert to fraction form
    526,585.36/789,727.16 = 171,630.40/x
  3. Step 3: Cross multiply
    526,585.36x = 789,727.16 × 171,630.40
  4. Step 4: Simplify right side
    526,585.36x = 135,541,188,361.66
  5. Step 5: Solve for x
    x = 135,541,188,361.66/526,585.36
  6. Step 6: Final answer
    x = 257,396.42

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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.