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Finding the Fourth Proportional to 69,790.08, 104,713.11 and 25,419.90

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Solution

The fourth proportional to 69,790.08, 104,713.11 and 25,419.90 is: 38,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,790.08 : 104,713.11 = 25,419.90 : x
  2. Step 2: Convert to fraction form
    69,790.08/104,713.11 = 25,419.90/x
  3. Step 3: Cross multiply
    69,790.08x = 104,713.11 × 25,419.90
  4. Step 4: Simplify right side
    69,790.08x = 2,661,796,784.89
  5. Step 5: Solve for x
    x = 2,661,796,784.89/69,790.08
  6. Step 6: Final answer
    x = 38,140.04

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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.