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Finding the Fourth Proportional to 122,367.84, 168,829.74 and 71,344.46

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Solution

The fourth proportional to 122,367.84, 168,829.74 and 71,344.46 is: 98,433.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,367.84 : 168,829.74 = 71,344.46 : x
  2. Step 2: Convert to fraction form
    122,367.84/168,829.74 = 71,344.46/x
  3. Step 3: Cross multiply
    122,367.84x = 168,829.74 × 71,344.46
  4. Step 4: Simplify right side
    122,367.84x = 12,045,065,788.09
  5. Step 5: Solve for x
    x = 12,045,065,788.09/122,367.84
  6. Step 6: Final answer
    x = 98,433.26

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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.