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Finding the Fourth Proportional to 69,696.54, 96,124.66 and 42,790.97

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Solution

The fourth proportional to 69,696.54, 96,124.66 and 42,790.97 is: 59,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,696.54 : 96,124.66 = 42,790.97 : x
  2. Step 2: Convert to fraction form
    69,696.54/96,124.66 = 42,790.97/x
  3. Step 3: Cross multiply
    69,696.54x = 96,124.66 × 42,790.97
  4. Step 4: Simplify right side
    69,696.54x = 4,113,267,575.65
  5. Step 5: Solve for x
    x = 4,113,267,575.65/69,696.54
  6. Step 6: Final answer
    x = 59,016.81

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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.