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Finding the Fourth Proportional to 996,608.54, 1,375,744.90 and 670,110.80

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Solution

The fourth proportional to 996,608.54, 1,375,744.90 and 670,110.80 is: 925,038.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,608.54 : 1,375,744.90 = 670,110.80 : x
  2. Step 2: Convert to fraction form
    996,608.54/1,375,744.90 = 670,110.80/x
  3. Step 3: Cross multiply
    996,608.54x = 1,375,744.90 × 670,110.80
  4. Step 4: Simplify right side
    996,608.54x = 921,901,515,534.92
  5. Step 5: Solve for x
    x = 921,901,515,534.92/996,608.54
  6. Step 6: Final answer
    x = 925,038.75

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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.