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Finding the Fourth Proportional to 122,312.43, 168,792.84 and 73,907.64

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Solution

The fourth proportional to 122,312.43, 168,792.84 and 73,907.64 is: 101,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,312.43 : 168,792.84 = 73,907.64 : x
  2. Step 2: Convert to fraction form
    122,312.43/168,792.84 = 73,907.64/x
  3. Step 3: Cross multiply
    122,312.43x = 168,792.84 × 73,907.64
  4. Step 4: Simplify right side
    122,312.43x = 12,475,080,453.30
  5. Step 5: Solve for x
    x = 12,475,080,453.30/122,312.43
  6. Step 6: Final answer
    x = 101,993.56

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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.