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Finding the Fourth Proportional to 526,644.16, 789,885.12 and 171,657.28

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Solution

The fourth proportional to 526,644.16, 789,885.12 and 171,657.28 is: 257,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,644.16 : 789,885.12 = 171,657.28 : x
  2. Step 2: Convert to fraction form
    526,644.16/789,885.12 = 171,657.28/x
  3. Step 3: Cross multiply
    526,644.16x = 789,885.12 × 171,657.28
  4. Step 4: Simplify right side
    526,644.16x = 135,589,531,211.67
  5. Step 5: Solve for x
    x = 135,589,531,211.67/526,644.16
  6. Step 6: Final answer
    x = 257,459.48

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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.