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Finding the Fourth Proportional to 178,969.75, 246,971.94 and 98,396.65

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Solution

The fourth proportional to 178,969.75, 246,971.94 and 98,396.65 is: 135,783.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,969.75 : 246,971.94 = 98,396.65 : x
  2. Step 2: Convert to fraction form
    178,969.75/246,971.94 = 98,396.65/x
  3. Step 3: Cross multiply
    178,969.75x = 246,971.94 × 98,396.65
  4. Step 4: Simplify right side
    178,969.75x = 24,301,211,048.02
  5. Step 5: Solve for x
    x = 24,301,211,048.02/178,969.75
  6. Step 6: Final answer
    x = 135,783.91

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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.