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Finding the Fourth Proportional to 18,822.19, 25,776.88 and 18,576.16

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Solution

The fourth proportional to 18,822.19, 25,776.88 and 18,576.16 is: 25,439.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.19 : 25,776.88 = 18,576.16 : x
  2. Step 2: Convert to fraction form
    18,822.19/25,776.88 = 18,576.16/x
  3. Step 3: Cross multiply
    18,822.19x = 25,776.88 × 18,576.16
  4. Step 4: Simplify right side
    18,822.19x = 478,835,318.30
  5. Step 5: Solve for x
    x = 478,835,318.30/18,822.19
  6. Step 6: Final answer
    x = 25,439.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.