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Finding the Fourth Proportional to 328,735.72, 493,017.18 and 118,334.44

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Solution

The fourth proportional to 328,735.72, 493,017.18 and 118,334.44 is: 177,470.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,735.72 : 493,017.18 = 118,334.44 : x
  2. Step 2: Convert to fraction form
    328,735.72/493,017.18 = 118,334.44/x
  3. Step 3: Cross multiply
    328,735.72x = 493,017.18 × 118,334.44
  4. Step 4: Simplify right side
    328,735.72x = 58,340,911,905.68
  5. Step 5: Solve for x
    x = 58,340,911,905.68/328,735.72
  6. Step 6: Final answer
    x = 177,470.56

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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.