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Finding the Fourth Proportional to 554,890.36, 765,751.34 and 313,183.12

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Solution

The fourth proportional to 554,890.36, 765,751.34 and 313,183.12 is: 432,194.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,890.36 : 765,751.34 = 313,183.12 : x
  2. Step 2: Convert to fraction form
    554,890.36/765,751.34 = 313,183.12/x
  3. Step 3: Cross multiply
    554,890.36x = 765,751.34 × 313,183.12
  4. Step 4: Simplify right side
    554,890.36x = 239,820,393,805.38
  5. Step 5: Solve for x
    x = 239,820,393,805.38/554,890.36
  6. Step 6: Final answer
    x = 432,194.20

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1.5x scale

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.