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Finding the Fourth Proportional to 269,288.94, 371,621.21 and 148,434.86

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Solution

The fourth proportional to 269,288.94, 371,621.21 and 148,434.86 is: 204,841.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,288.94 : 371,621.21 = 148,434.86 : x
  2. Step 2: Convert to fraction form
    269,288.94/371,621.21 = 148,434.86/x
  3. Step 3: Cross multiply
    269,288.94x = 371,621.21 × 148,434.86
  4. Step 4: Simplify right side
    269,288.94x = 55,161,539,679.10
  5. Step 5: Solve for x
    x = 55,161,539,679.10/269,288.94
  6. Step 6: Final answer
    x = 204,841.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.