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Finding the Fourth Proportional to 63,647.36, 87,898.60 and 47,706.56

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Solution

The fourth proportional to 63,647.36, 87,898.60 and 47,706.56 is: 65,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,647.36 : 87,898.60 = 47,706.56 : x
  2. Step 2: Convert to fraction form
    63,647.36/87,898.60 = 47,706.56/x
  3. Step 3: Cross multiply
    63,647.36x = 87,898.60 × 47,706.56
  4. Step 4: Simplify right side
    63,647.36x = 4,193,339,834.82
  5. Step 5: Solve for x
    x = 4,193,339,834.82/63,647.36
  6. Step 6: Final answer
    x = 65,883.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.