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Finding the Fourth Proportional to 18,622.51, 25,705.08 and 11,926.17

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Solution

The fourth proportional to 18,622.51, 25,705.08 and 11,926.17 is: 16,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.51 : 25,705.08 = 11,926.17 : x
  2. Step 2: Convert to fraction form
    18,622.51/25,705.08 = 11,926.17/x
  3. Step 3: Cross multiply
    18,622.51x = 25,705.08 × 11,926.17
  4. Step 4: Simplify right side
    18,622.51x = 306,563,153.94
  5. Step 5: Solve for x
    x = 306,563,153.94/18,622.51
  6. Step 6: Final answer
    x = 16,461.97

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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.