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Finding the Fourth Proportional to 5,579.13, 8,381.75 and 5,263.88

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Solution

The fourth proportional to 5,579.13, 8,381.75 and 5,263.88 is: 7,908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.13 : 8,381.75 = 5,263.88 : x
  2. Step 2: Convert to fraction form
    5,579.13/8,381.75 = 5,263.88/x
  3. Step 3: Cross multiply
    5,579.13x = 8,381.75 × 5,263.88
  4. Step 4: Simplify right side
    5,579.13x = 44,120,457.96
  5. Step 5: Solve for x
    x = 44,120,457.96/5,579.13
  6. Step 6: Final answer
    x = 7,908.13

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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.