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Finding the Fourth Proportional to 122,467.47, 169,023.68 and 74,748.54

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Solution

The fourth proportional to 122,467.47, 169,023.68 and 74,748.54 is: 103,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,467.47 : 169,023.68 = 74,748.54 : x
  2. Step 2: Convert to fraction form
    122,467.47/169,023.68 = 74,748.54/x
  3. Step 3: Cross multiply
    122,467.47x = 169,023.68 × 74,748.54
  4. Step 4: Simplify right side
    122,467.47x = 12,634,273,305.43
  5. Step 5: Solve for x
    x = 12,634,273,305.43/122,467.47
  6. Step 6: Final answer
    x = 103,164.32

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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.