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Finding the Fourth Proportional to 806,998.80, 1,207,873.80 and 628,539.60

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Solution

The fourth proportional to 806,998.80, 1,207,873.80 and 628,539.60 is: 940,765.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,998.80 : 1,207,873.80 = 628,539.60 : x
  2. Step 2: Convert to fraction form
    806,998.80/1,207,873.80 = 628,539.60/x
  3. Step 3: Cross multiply
    806,998.80x = 1,207,873.80 × 628,539.60
  4. Step 4: Simplify right side
    806,998.80x = 759,196,515,102.48
  5. Step 5: Solve for x
    x = 759,196,515,102.48/806,998.80
  6. Step 6: Final answer
    x = 940,765.36

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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.