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Finding the Fourth Proportional to 18,586.92, 25,659.90 and 14,328.66

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Solution

The fourth proportional to 18,586.92, 25,659.90 and 14,328.66 is: 19,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.92 : 25,659.90 = 14,328.66 : x
  2. Step 2: Convert to fraction form
    18,586.92/25,659.90 = 14,328.66/x
  3. Step 3: Cross multiply
    18,586.92x = 25,659.90 × 14,328.66
  4. Step 4: Simplify right side
    18,586.92x = 367,671,982.73
  5. Step 5: Solve for x
    x = 367,671,982.73/18,586.92
  6. Step 6: Final answer
    x = 19,781.22

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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.