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Finding the Fourth Proportional to 71,446.92, 98,596.58 and 39,615

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Solution

The fourth proportional to 71,446.92, 98,596.58 and 39,615 is: 54,668.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,446.92 : 98,596.58 = 39,615 : x
  2. Step 2: Convert to fraction form
    71,446.92/98,596.58 = 39,615/x
  3. Step 3: Cross multiply
    71,446.92x = 98,596.58 × 39,615
  4. Step 4: Simplify right side
    71,446.92x = 3,905,903,516.70
  5. Step 5: Solve for x
    x = 3,905,903,516.70/71,446.92
  6. Step 6: Final answer
    x = 54,668.61

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1.5x scale

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.