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Finding the Fourth Proportional to 298,693.60, 448,142.80 and 132,600.80

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Solution

The fourth proportional to 298,693.60, 448,142.80 and 132,600.80 is: 198,946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,693.60 : 448,142.80 = 132,600.80 : x
  2. Step 2: Convert to fraction form
    298,693.60/448,142.80 = 132,600.80/x
  3. Step 3: Cross multiply
    298,693.60x = 448,142.80 × 132,600.80
  4. Step 4: Simplify right side
    298,693.60x = 59,424,093,794.24
  5. Step 5: Solve for x
    x = 59,424,093,794.24/298,693.60
  6. Step 6: Final answer
    x = 198,946.66

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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.