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Finding the Fourth Proportional to 283,806.88, 391,748.40 and 169,121.50

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Solution

The fourth proportional to 283,806.88, 391,748.40 and 169,121.50 is: 233,444.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,806.88 : 391,748.40 = 169,121.50 : x
  2. Step 2: Convert to fraction form
    283,806.88/391,748.40 = 169,121.50/x
  3. Step 3: Cross multiply
    283,806.88x = 391,748.40 × 169,121.50
  4. Step 4: Simplify right side
    283,806.88x = 66,253,077,787.48
  5. Step 5: Solve for x
    x = 66,253,077,787.48/283,806.88
  6. Step 6: Final answer
    x = 233,444.22

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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.