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Finding the Fourth Proportional to 16,782.21, 25,154.88 and 6,916.11

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Solution

The fourth proportional to 16,782.21, 25,154.88 and 6,916.11 is: 10,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,782.21 : 25,154.88 = 6,916.11 : x
  2. Step 2: Convert to fraction form
    16,782.21/25,154.88 = 6,916.11/x
  3. Step 3: Cross multiply
    16,782.21x = 25,154.88 × 6,916.11
  4. Step 4: Simplify right side
    16,782.21x = 173,973,917.12
  5. Step 5: Solve for x
    x = 173,973,917.12/16,782.21
  6. Step 6: Final answer
    x = 10,366.57

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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.