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Finding the Fourth Proportional to 18,702.36, 25,806.12 and 10,634.76

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Solution

The fourth proportional to 18,702.36, 25,806.12 and 10,634.76 is: 14,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.36 : 25,806.12 = 10,634.76 : x
  2. Step 2: Convert to fraction form
    18,702.36/25,806.12 = 10,634.76/x
  3. Step 3: Cross multiply
    18,702.36x = 25,806.12 × 10,634.76
  4. Step 4: Simplify right side
    18,702.36x = 274,441,892.73
  5. Step 5: Solve for x
    x = 274,441,892.73/18,702.36
  6. Step 6: Final answer
    x = 14,674.19

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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.