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Finding the Fourth Proportional to 18,461.34, 27,698.94 and 11,071.12

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Solution

The fourth proportional to 18,461.34, 27,698.94 and 11,071.12 is: 16,610.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.34 : 27,698.94 = 11,071.12 : x
  2. Step 2: Convert to fraction form
    18,461.34/27,698.94 = 11,071.12/x
  3. Step 3: Cross multiply
    18,461.34x = 27,698.94 × 11,071.12
  4. Step 4: Simplify right side
    18,461.34x = 306,658,288.61
  5. Step 5: Solve for x
    x = 306,658,288.61/18,461.34
  6. Step 6: Final answer
    x = 16,610.84

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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.