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Finding the Fourth Proportional to 69,918.32, 104,796.11 and 39,953.56

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Solution

The fourth proportional to 69,918.32, 104,796.11 and 39,953.56 is: 59,883.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,918.32 : 104,796.11 = 39,953.56 : x
  2. Step 2: Convert to fraction form
    69,918.32/104,796.11 = 39,953.56/x
  3. Step 3: Cross multiply
    69,918.32x = 104,796.11 × 39,953.56
  4. Step 4: Simplify right side
    69,918.32x = 4,186,977,703.04
  5. Step 5: Solve for x
    x = 4,186,977,703.04/69,918.32
  6. Step 6: Final answer
    x = 59,883.84

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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.