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Finding the Fourth Proportional to 5,334.39, 7,990.61 and 4,719.69

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Solution

The fourth proportional to 5,334.39, 7,990.61 and 4,719.69 is: 7,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,334.39 : 7,990.61 = 4,719.69 : x
  2. Step 2: Convert to fraction form
    5,334.39/7,990.61 = 4,719.69/x
  3. Step 3: Cross multiply
    5,334.39x = 7,990.61 × 4,719.69
  4. Step 4: Simplify right side
    5,334.39x = 37,713,178.51
  5. Step 5: Solve for x
    x = 37,713,178.51/5,334.39
  6. Step 6: Final answer
    x = 7,069.82

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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.