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Finding the Fourth Proportional to 69,940.86, 104,890.43 and 25,557.32

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Solution

The fourth proportional to 69,940.86, 104,890.43 and 25,557.32 is: 38,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,940.86 : 104,890.43 = 25,557.32 : x
  2. Step 2: Convert to fraction form
    69,940.86/104,890.43 = 25,557.32/x
  3. Step 3: Cross multiply
    69,940.86x = 104,890.43 × 25,557.32
  4. Step 4: Simplify right side
    69,940.86x = 2,680,717,632.21
  5. Step 5: Solve for x
    x = 2,680,717,632.21/69,940.86
  6. Step 6: Final answer
    x = 38,328.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.