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Finding the Fourth Proportional to 911,132.80, 1,366,699.20 and 859,523.20

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Solution

The fourth proportional to 911,132.80, 1,366,699.20 and 859,523.20 is: 1,289,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,132.80 : 1,366,699.20 = 859,523.20 : x
  2. Step 2: Convert to fraction form
    911,132.80/1,366,699.20 = 859,523.20/x
  3. Step 3: Cross multiply
    911,132.80x = 1,366,699.20 × 859,523.20
  4. Step 4: Simplify right side
    911,132.80x = 1,174,709,669,821.44
  5. Step 5: Solve for x
    x = 1,174,709,669,821.44/911,132.80
  6. Step 6: Final answer
    x = 1,289,284.80

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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.