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Finding the Fourth Proportional to 69,028.81, 103,477.60 and 43,998.59

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Solution

The fourth proportional to 69,028.81, 103,477.60 and 43,998.59 is: 65,956.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,028.81 : 103,477.60 = 43,998.59 : x
  2. Step 2: Convert to fraction form
    69,028.81/103,477.60 = 43,998.59/x
  3. Step 3: Cross multiply
    69,028.81x = 103,477.60 × 43,998.59
  4. Step 4: Simplify right side
    69,028.81x = 4,552,868,810.28
  5. Step 5: Solve for x
    x = 4,552,868,810.28/69,028.81
  6. Step 6: Final answer
    x = 65,956.07

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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.