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Finding the Fourth Proportional to 69,794.60, 104,677.99 and 19,875.11

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Solution

The fourth proportional to 69,794.60, 104,677.99 and 19,875.11 is: 29,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,794.60 : 104,677.99 = 19,875.11 : x
  2. Step 2: Convert to fraction form
    69,794.60/104,677.99 = 19,875.11/x
  3. Step 3: Cross multiply
    69,794.60x = 104,677.99 × 19,875.11
  4. Step 4: Simplify right side
    69,794.60x = 2,080,485,992.75
  5. Step 5: Solve for x
    x = 2,080,485,992.75/69,794.60
  6. Step 6: Final answer
    x = 29,808.70

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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.