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Finding the Fourth Proportional to 18,676.88, 25,774.16 and 10,293.40

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Solution

The fourth proportional to 18,676.88, 25,774.16 and 10,293.40 is: 14,204.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.88 : 25,774.16 = 10,293.40 : x
  2. Step 2: Convert to fraction form
    18,676.88/25,774.16 = 10,293.40/x
  3. Step 3: Cross multiply
    18,676.88x = 25,774.16 × 10,293.40
  4. Step 4: Simplify right side
    18,676.88x = 265,303,738.54
  5. Step 5: Solve for x
    x = 265,303,738.54/18,676.88
  6. Step 6: Final answer
    x = 14,204.93

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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.