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Finding the Fourth Proportional to 57,375.90, 85,869.45 and 57,375.90

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Solution

The fourth proportional to 57,375.90, 85,869.45 and 57,375.90 is: 85,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,375.90 : 85,869.45 = 57,375.90 : x
  2. Step 2: Convert to fraction form
    57,375.90/85,869.45 = 57,375.90/x
  3. Step 3: Cross multiply
    57,375.90x = 85,869.45 × 57,375.90
  4. Step 4: Simplify right side
    57,375.90x = 4,926,836,976.26
  5. Step 5: Solve for x
    x = 4,926,836,976.26/57,375.90
  6. Step 6: Final answer
    x = 85,869.45

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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.