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Finding the Fourth Proportional to 18,425.63, 27,638.45 and 4,574.63

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Solution

The fourth proportional to 18,425.63, 27,638.45 and 4,574.63 is: 6,861.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.63 : 27,638.45 = 4,574.63 : x
  2. Step 2: Convert to fraction form
    18,425.63/27,638.45 = 4,574.63/x
  3. Step 3: Cross multiply
    18,425.63x = 27,638.45 × 4,574.63
  4. Step 4: Simplify right side
    18,425.63x = 126,435,521.46
  5. Step 5: Solve for x
    x = 126,435,521.46/18,425.63
  6. Step 6: Final answer
    x = 6,861.94

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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.