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Finding the Fourth Proportional to 18,657.24, 25,703.18 and 12,982.24

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Solution

The fourth proportional to 18,657.24, 25,703.18 and 12,982.24 is: 17,885.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.24 : 25,703.18 = 12,982.24 : x
  2. Step 2: Convert to fraction form
    18,657.24/25,703.18 = 12,982.24/x
  3. Step 3: Cross multiply
    18,657.24x = 25,703.18 × 12,982.24
  4. Step 4: Simplify right side
    18,657.24x = 333,684,819.72
  5. Step 5: Solve for x
    x = 333,684,819.72/18,657.24
  6. Step 6: Final answer
    x = 17,885.01

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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.