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Finding the Fourth Proportional to 18,396.81, 25,397.06 and 10,845.59

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Solution

The fourth proportional to 18,396.81, 25,397.06 and 10,845.59 is: 14,972.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.81 : 25,397.06 = 10,845.59 : x
  2. Step 2: Convert to fraction form
    18,396.81/25,397.06 = 10,845.59/x
  3. Step 3: Cross multiply
    18,396.81x = 25,397.06 × 10,845.59
  4. Step 4: Simplify right side
    18,396.81x = 275,445,918.75
  5. Step 5: Solve for x
    x = 275,445,918.75/18,396.81
  6. Step 6: Final answer
    x = 14,972.48

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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.