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Finding the Fourth Proportional to 19,424.94, 29,133.07 and 7,579.02

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Solution

The fourth proportional to 19,424.94, 29,133.07 and 7,579.02 is: 11,366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,424.94 : 29,133.07 = 7,579.02 : x
  2. Step 2: Convert to fraction form
    19,424.94/29,133.07 = 7,579.02/x
  3. Step 3: Cross multiply
    19,424.94x = 29,133.07 × 7,579.02
  4. Step 4: Simplify right side
    19,424.94x = 220,800,120.19
  5. Step 5: Solve for x
    x = 220,800,120.19/19,424.94
  6. Step 6: Final answer
    x = 11,366.84

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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.