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Finding the Fourth Proportional to 69,034.25, 103,419.45 and 57,861.11

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Solution

The fourth proportional to 69,034.25, 103,419.45 and 57,861.11 is: 86,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,034.25 : 103,419.45 = 57,861.11 : x
  2. Step 2: Convert to fraction form
    69,034.25/103,419.45 = 57,861.11/x
  3. Step 3: Cross multiply
    69,034.25x = 103,419.45 × 57,861.11
  4. Step 4: Simplify right side
    69,034.25x = 5,983,964,172.59
  5. Step 5: Solve for x
    x = 5,983,964,172.59/69,034.25
  6. Step 6: Final answer
    x = 86,681.09

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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.