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Finding the Fourth Proportional to 18,502.74, 25,526.61 and 11,787.17

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Solution

The fourth proportional to 18,502.74, 25,526.61 and 11,787.17 is: 16,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.74 : 25,526.61 = 11,787.17 : x
  2. Step 2: Convert to fraction form
    18,502.74/25,526.61 = 11,787.17/x
  3. Step 3: Cross multiply
    18,502.74x = 25,526.61 × 11,787.17
  4. Step 4: Simplify right side
    18,502.74x = 300,886,363.96
  5. Step 5: Solve for x
    x = 300,886,363.96/18,502.74
  6. Step 6: Final answer
    x = 16,261.72

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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.