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Finding the Fourth Proportional to 5,553.78, 7,669.53 and 4,763.22

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Solution

The fourth proportional to 5,553.78, 7,669.53 and 4,763.22 is: 6,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,553.78 : 7,669.53 = 4,763.22 : x
  2. Step 2: Convert to fraction form
    5,553.78/7,669.53 = 4,763.22/x
  3. Step 3: Cross multiply
    5,553.78x = 7,669.53 × 4,763.22
  4. Step 4: Simplify right side
    5,553.78x = 36,531,658.69
  5. Step 5: Solve for x
    x = 36,531,658.69/5,553.78
  6. Step 6: Final answer
    x = 6,577.80

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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.