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Finding the Fourth Proportional to 483,375.99, 725,012.94 and 128,425.89

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Solution

The fourth proportional to 483,375.99, 725,012.94 and 128,425.89 is: 192,625.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,375.99 : 725,012.94 = 128,425.89 : x
  2. Step 2: Convert to fraction form
    483,375.99/725,012.94 = 128,425.89/x
  3. Step 3: Cross multiply
    483,375.99x = 725,012.94 × 128,425.89
  4. Step 4: Simplify right side
    483,375.99x = 93,110,432,081.02
  5. Step 5: Solve for x
    x = 93,110,432,081.02/483,375.99
  6. Step 6: Final answer
    x = 192,625.27

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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.