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Finding the Fourth Proportional to 18,605.95, 25,676.24 and 10,222.45

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Solution

The fourth proportional to 18,605.95, 25,676.24 and 10,222.45 is: 14,107.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.95 : 25,676.24 = 10,222.45 : x
  2. Step 2: Convert to fraction form
    18,605.95/25,676.24 = 10,222.45/x
  3. Step 3: Cross multiply
    18,605.95x = 25,676.24 × 10,222.45
  4. Step 4: Simplify right side
    18,605.95x = 262,474,166.22
  5. Step 5: Solve for x
    x = 262,474,166.22/18,605.95
  6. Step 6: Final answer
    x = 14,107.00

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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.