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Finding the Fourth Proportional to 69,388.57, 95,706.83 and 47,886.51

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Solution

The fourth proportional to 69,388.57, 95,706.83 and 47,886.51 is: 66,049.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,388.57 : 95,706.83 = 47,886.51 : x
  2. Step 2: Convert to fraction form
    69,388.57/95,706.83 = 47,886.51/x
  3. Step 3: Cross multiply
    69,388.57x = 95,706.83 × 47,886.51
  4. Step 4: Simplify right side
    69,388.57x = 4,583,066,071.86
  5. Step 5: Solve for x
    x = 4,583,066,071.86/69,388.57
  6. Step 6: Final answer
    x = 66,049.29

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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.