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Finding the Fourth Proportional to 69,480.99, 104,129.22 and 31,502.03

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Solution

The fourth proportional to 69,480.99, 104,129.22 and 31,502.03 is: 47,211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,480.99 : 104,129.22 = 31,502.03 : x
  2. Step 2: Convert to fraction form
    69,480.99/104,129.22 = 31,502.03/x
  3. Step 3: Cross multiply
    69,480.99x = 104,129.22 × 31,502.03
  4. Step 4: Simplify right side
    69,480.99x = 3,280,281,467.64
  5. Step 5: Solve for x
    x = 3,280,281,467.64/69,480.99
  6. Step 6: Final answer
    x = 47,211.21

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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.