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Finding the Fourth Proportional to 526,612.83, 789,768.45 and 171,657.87

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Solution

The fourth proportional to 526,612.83, 789,768.45 and 171,657.87 is: 257,437.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,612.83 : 789,768.45 = 171,657.87 : x
  2. Step 2: Convert to fraction form
    526,612.83/789,768.45 = 171,657.87/x
  3. Step 3: Cross multiply
    526,612.83x = 789,768.45 × 171,657.87
  4. Step 4: Simplify right side
    526,612.83x = 135,569,969,920.20
  5. Step 5: Solve for x
    x = 135,569,969,920.20/526,612.83
  6. Step 6: Final answer
    x = 257,437.65

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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.