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Finding the Fourth Proportional to 9,374.74, 12,936.18 and 5,395.08

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Solution

The fourth proportional to 9,374.74, 12,936.18 and 5,395.08 is: 7,444.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,374.74 : 12,936.18 = 5,395.08 : x
  2. Step 2: Convert to fraction form
    9,374.74/12,936.18 = 5,395.08/x
  3. Step 3: Cross multiply
    9,374.74x = 12,936.18 × 5,395.08
  4. Step 4: Simplify right side
    9,374.74x = 69,791,725.99
  5. Step 5: Solve for x
    x = 69,791,725.99/9,374.74
  6. Step 6: Final answer
    x = 7,444.66

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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.