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Finding the Fourth Proportional to 69,777.54, 104,666.70 and 17,186.64

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Solution

The fourth proportional to 69,777.54, 104,666.70 and 17,186.64 is: 25,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,777.54 : 104,666.70 = 17,186.64 : x
  2. Step 2: Convert to fraction form
    69,777.54/104,666.70 = 17,186.64/x
  3. Step 3: Cross multiply
    69,777.54x = 104,666.70 × 17,186.64
  4. Step 4: Simplify right side
    69,777.54x = 1,798,868,892.89
  5. Step 5: Solve for x
    x = 1,798,868,892.89/69,777.54
  6. Step 6: Final answer
    x = 25,780.06

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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.