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Finding the Fourth Proportional to 18,895.84, 26,082.24 and 11,817.76

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Solution

The fourth proportional to 18,895.84, 26,082.24 and 11,817.76 is: 16,312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.84 : 26,082.24 = 11,817.76 : x
  2. Step 2: Convert to fraction form
    18,895.84/26,082.24 = 11,817.76/x
  3. Step 3: Cross multiply
    18,895.84x = 26,082.24 × 11,817.76
  4. Step 4: Simplify right side
    18,895.84x = 308,233,652.58
  5. Step 5: Solve for x
    x = 308,233,652.58/18,895.84
  6. Step 6: Final answer
    x = 16,312.25

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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.