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Finding the Fourth Proportional to 67,926.40, 101,889.60 and 47,916.16

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Solution

The fourth proportional to 67,926.40, 101,889.60 and 47,916.16 is: 71,874.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,926.40 : 101,889.60 = 47,916.16 : x
  2. Step 2: Convert to fraction form
    67,926.40/101,889.60 = 47,916.16/x
  3. Step 3: Cross multiply
    67,926.40x = 101,889.60 × 47,916.16
  4. Step 4: Simplify right side
    67,926.40x = 4,882,158,375.94
  5. Step 5: Solve for x
    x = 4,882,158,375.94/67,926.40
  6. Step 6: Final answer
    x = 71,874.24

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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.