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Finding the Fourth Proportional to 7,720.72, 10,654.41 and 4,363

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Solution

The fourth proportional to 7,720.72, 10,654.41 and 4,363 is: 6,020.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.72 : 10,654.41 = 4,363 : x
  2. Step 2: Convert to fraction form
    7,720.72/10,654.41 = 4,363/x
  3. Step 3: Cross multiply
    7,720.72x = 10,654.41 × 4,363
  4. Step 4: Simplify right side
    7,720.72x = 46,485,190.83
  5. Step 5: Solve for x
    x = 46,485,190.83/7,720.72
  6. Step 6: Final answer
    x = 6,020.84

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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.