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Finding the Fourth Proportional to 18,666.28, 27,915.90 and 16,599.16

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Solution

The fourth proportional to 18,666.28, 27,915.90 and 16,599.16 is: 24,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.28 : 27,915.90 = 16,599.16 : x
  2. Step 2: Convert to fraction form
    18,666.28/27,915.90 = 16,599.16/x
  3. Step 3: Cross multiply
    18,666.28x = 27,915.90 × 16,599.16
  4. Step 4: Simplify right side
    18,666.28x = 463,380,490.64
  5. Step 5: Solve for x
    x = 463,380,490.64/18,666.28
  6. Step 6: Final answer
    x = 24,824.47

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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.