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Finding the Fourth Proportional to 69,722.65, 96,213.57 and 39,508.34

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Solution

The fourth proportional to 69,722.65, 96,213.57 and 39,508.34 is: 54,519.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,722.65 : 96,213.57 = 39,508.34 : x
  2. Step 2: Convert to fraction form
    69,722.65/96,213.57 = 39,508.34/x
  3. Step 3: Cross multiply
    69,722.65x = 96,213.57 × 39,508.34
  4. Step 4: Simplify right side
    69,722.65x = 3,801,237,955.11
  5. Step 5: Solve for x
    x = 3,801,237,955.11/69,722.65
  6. Step 6: Final answer
    x = 54,519.42

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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.