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Finding the Fourth Proportional to 18,777.40, 28,166.10 and 17,049.40

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Solution

The fourth proportional to 18,777.40, 28,166.10 and 17,049.40 is: 25,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.40 : 28,166.10 = 17,049.40 : x
  2. Step 2: Convert to fraction form
    18,777.40/28,166.10 = 17,049.40/x
  3. Step 3: Cross multiply
    18,777.40x = 28,166.10 × 17,049.40
  4. Step 4: Simplify right side
    18,777.40x = 480,215,105.34
  5. Step 5: Solve for x
    x = 480,215,105.34/18,777.40
  6. Step 6: Final answer
    x = 25,574.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.