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Finding the Fourth Proportional to 124,059.78, 186,019.20 and 84,664.62

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Solution

The fourth proportional to 124,059.78, 186,019.20 and 84,664.62 is: 126,948.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,059.78 : 186,019.20 = 84,664.62 : x
  2. Step 2: Convert to fraction form
    124,059.78/186,019.20 = 84,664.62/x
  3. Step 3: Cross multiply
    124,059.78x = 186,019.20 × 84,664.62
  4. Step 4: Simplify right side
    124,059.78x = 15,749,244,880.70
  5. Step 5: Solve for x
    x = 15,749,244,880.70/124,059.78
  6. Step 6: Final answer
    x = 126,948.84

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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.