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Finding the Fourth Proportional to 68,464.80, 102,684.24 and 29,023.20

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Solution

The fourth proportional to 68,464.80, 102,684.24 and 29,023.20 is: 43,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,464.80 : 102,684.24 = 29,023.20 : x
  2. Step 2: Convert to fraction form
    68,464.80/102,684.24 = 29,023.20/x
  3. Step 3: Cross multiply
    68,464.80x = 102,684.24 × 29,023.20
  4. Step 4: Simplify right side
    68,464.80x = 2,980,225,234.37
  5. Step 5: Solve for x
    x = 2,980,225,234.37/68,464.80
  6. Step 6: Final answer
    x = 43,529.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.