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Finding the Fourth Proportional to 53,409.66, 80,122.46 and 19,673.11

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Solution

The fourth proportional to 53,409.66, 80,122.46 and 19,673.11 is: 29,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,409.66 : 80,122.46 = 19,673.11 : x
  2. Step 2: Convert to fraction form
    53,409.66/80,122.46 = 19,673.11/x
  3. Step 3: Cross multiply
    53,409.66x = 80,122.46 × 19,673.11
  4. Step 4: Simplify right side
    53,409.66x = 1,576,257,969.05
  5. Step 5: Solve for x
    x = 1,576,257,969.05/53,409.66
  6. Step 6: Final answer
    x = 29,512.60

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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.