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Finding the Fourth Proportional to 167,979, 251,968.50 and 69,483

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Solution

The fourth proportional to 167,979, 251,968.50 and 69,483 is: 104,224.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,979 : 251,968.50 = 69,483 : x
  2. Step 2: Convert to fraction form
    167,979/251,968.50 = 69,483/x
  3. Step 3: Cross multiply
    167,979x = 251,968.50 × 69,483
  4. Step 4: Simplify right side
    167,979x = 17,507,527,285.50
  5. Step 5: Solve for x
    x = 17,507,527,285.50/167,979
  6. Step 6: Final answer
    x = 104,224.50

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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.