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Finding the Fourth Proportional to 1,063,976.80, 1,595,965.20 and 854,024.80

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Solution

The fourth proportional to 1,063,976.80, 1,595,965.20 and 854,024.80 is: 1,281,037.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063,976.80 : 1,595,965.20 = 854,024.80 : x
  2. Step 2: Convert to fraction form
    1,063,976.80/1,595,965.20 = 854,024.80/x
  3. Step 3: Cross multiply
    1,063,976.80x = 1,595,965.20 × 854,024.80
  4. Step 4: Simplify right side
    1,063,976.80x = 1,362,993,860,736.96
  5. Step 5: Solve for x
    x = 1,362,993,860,736.96/1,063,976.80
  6. Step 6: Final answer
    x = 1,281,037.20

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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.