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Finding the Fourth Proportional to 69,483.99, 104,133.72 and 31,505.03

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Solution

The fourth proportional to 69,483.99, 104,133.72 and 31,505.03 is: 47,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,483.99 : 104,133.72 = 31,505.03 : x
  2. Step 2: Convert to fraction form
    69,483.99/104,133.72 = 31,505.03/x
  3. Step 3: Cross multiply
    69,483.99x = 104,133.72 × 31,505.03
  4. Step 4: Simplify right side
    69,483.99x = 3,280,735,451.94
  5. Step 5: Solve for x
    x = 3,280,735,451.94/69,483.99
  6. Step 6: Final answer
    x = 47,215.70

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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.