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Finding the Fourth Proportional to 12,364.78, 18,543.81 and 3,597.42

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Solution

The fourth proportional to 12,364.78, 18,543.81 and 3,597.42 is: 5,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364.78 : 18,543.81 = 3,597.42 : x
  2. Step 2: Convert to fraction form
    12,364.78/18,543.81 = 3,597.42/x
  3. Step 3: Cross multiply
    12,364.78x = 18,543.81 × 3,597.42
  4. Step 4: Simplify right side
    12,364.78x = 66,709,872.97
  5. Step 5: Solve for x
    x = 66,709,872.97/12,364.78
  6. Step 6: Final answer
    x = 5,395.15

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1.5x scale

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.