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Finding the Fourth Proportional to 68,399.31, 102,754.66 and 49,482.30

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Solution

The fourth proportional to 68,399.31, 102,754.66 and 49,482.30 is: 74,336.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,399.31 : 102,754.66 = 49,482.30 : x
  2. Step 2: Convert to fraction form
    68,399.31/102,754.66 = 49,482.30/x
  3. Step 3: Cross multiply
    68,399.31x = 102,754.66 × 49,482.30
  4. Step 4: Simplify right side
    68,399.31x = 5,084,536,688.93
  5. Step 5: Solve for x
    x = 5,084,536,688.93/68,399.31
  6. Step 6: Final answer
    x = 74,336.08

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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.