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Finding the Fourth Proportional to 16,689.06, 25,036.29 and 7,919.19

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Solution

The fourth proportional to 16,689.06, 25,036.29 and 7,919.19 is: 11,880.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689.06 : 25,036.29 = 7,919.19 : x
  2. Step 2: Convert to fraction form
    16,689.06/25,036.29 = 7,919.19/x
  3. Step 3: Cross multiply
    16,689.06x = 25,036.29 × 7,919.19
  4. Step 4: Simplify right side
    16,689.06x = 198,267,137.41
  5. Step 5: Solve for x
    x = 198,267,137.41/16,689.06
  6. Step 6: Final answer
    x = 11,880.07

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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.