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Finding the Fourth Proportional to 9,364.68, 12,924 and 5,173.56

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Solution

The fourth proportional to 9,364.68, 12,924 and 5,173.56 is: 7,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,364.68 : 12,924 = 5,173.56 : x
  2. Step 2: Convert to fraction form
    9,364.68/12,924 = 5,173.56/x
  3. Step 3: Cross multiply
    9,364.68x = 12,924 × 5,173.56
  4. Step 4: Simplify right side
    9,364.68x = 66,863,089.44
  5. Step 5: Solve for x
    x = 66,863,089.44/9,364.68
  6. Step 6: Final answer
    x = 7,139.92

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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.