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Finding the Fourth Proportional to 69,542.88, 104,051.88 and 39,974.64

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Solution

The fourth proportional to 69,542.88, 104,051.88 and 39,974.64 is: 59,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,542.88 : 104,051.88 = 39,974.64 : x
  2. Step 2: Convert to fraction form
    69,542.88/104,051.88 = 39,974.64/x
  3. Step 3: Cross multiply
    69,542.88x = 104,051.88 × 39,974.64
  4. Step 4: Simplify right side
    69,542.88x = 4,159,436,444.32
  5. Step 5: Solve for x
    x = 4,159,436,444.32/69,542.88
  6. Step 6: Final answer
    x = 59,811.10

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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.