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Finding the Fourth Proportional to 17,990.64, 26,948.76 and 16,678.32

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Solution

The fourth proportional to 17,990.64, 26,948.76 and 16,678.32 is: 24,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.64 : 26,948.76 = 16,678.32 : x
  2. Step 2: Convert to fraction form
    17,990.64/26,948.76 = 16,678.32/x
  3. Step 3: Cross multiply
    17,990.64x = 26,948.76 × 16,678.32
  4. Step 4: Simplify right side
    17,990.64x = 449,460,042.88
  5. Step 5: Solve for x
    x = 449,460,042.88/17,990.64
  6. Step 6: Final answer
    x = 24,982.99

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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.