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Finding the Fourth Proportional to 18,342.71, 25,333.73 and 12,364.10

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Solution

The fourth proportional to 18,342.71, 25,333.73 and 12,364.10 is: 17,076.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.71 : 25,333.73 = 12,364.10 : x
  2. Step 2: Convert to fraction form
    18,342.71/25,333.73 = 12,364.10/x
  3. Step 3: Cross multiply
    18,342.71x = 25,333.73 × 12,364.10
  4. Step 4: Simplify right side
    18,342.71x = 313,228,771.09
  5. Step 5: Solve for x
    x = 313,228,771.09/18,342.71
  6. Step 6: Final answer
    x = 17,076.47

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1.5x scale

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.