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Finding the Fourth Proportional to 5,158.91, 7,716.68 and 4,784.99

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Solution

The fourth proportional to 5,158.91, 7,716.68 and 4,784.99 is: 7,157.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.91 : 7,716.68 = 4,784.99 : x
  2. Step 2: Convert to fraction form
    5,158.91/7,716.68 = 4,784.99/x
  3. Step 3: Cross multiply
    5,158.91x = 7,716.68 × 4,784.99
  4. Step 4: Simplify right side
    5,158.91x = 36,924,212.71
  5. Step 5: Solve for x
    x = 36,924,212.71/5,158.91
  6. Step 6: Final answer
    x = 7,157.37

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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.