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Finding the Fourth Proportional to 69,453.92, 104,071.44 and 53,697.40

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Solution

The fourth proportional to 69,453.92, 104,071.44 and 53,697.40 is: 80,461.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,453.92 : 104,071.44 = 53,697.40 : x
  2. Step 2: Convert to fraction form
    69,453.92/104,071.44 = 53,697.40/x
  3. Step 3: Cross multiply
    69,453.92x = 104,071.44 × 53,697.40
  4. Step 4: Simplify right side
    69,453.92x = 5,588,365,742.26
  5. Step 5: Solve for x
    x = 5,588,365,742.26/69,453.92
  6. Step 6: Final answer
    x = 80,461.49

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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.