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Finding the Fourth Proportional to 18,435.76, 25,433.26 and 12,465.26

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Solution

The fourth proportional to 18,435.76, 25,433.26 and 12,465.26 is: 17,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435.76 : 25,433.26 = 12,465.26 : x
  2. Step 2: Convert to fraction form
    18,435.76/25,433.26 = 12,465.26/x
  3. Step 3: Cross multiply
    18,435.76x = 25,433.26 × 12,465.26
  4. Step 4: Simplify right side
    18,435.76x = 317,032,198.55
  5. Step 5: Solve for x
    x = 317,032,198.55/18,435.76
  6. Step 6: Final answer
    x = 17,196.59

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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.