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Finding the Fourth Proportional to 14,065.70, 19,419.09 and 8,767.70

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Solution

The fourth proportional to 14,065.70, 19,419.09 and 8,767.70 is: 12,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,065.70 : 19,419.09 = 8,767.70 : x
  2. Step 2: Convert to fraction form
    14,065.70/19,419.09 = 8,767.70/x
  3. Step 3: Cross multiply
    14,065.70x = 19,419.09 × 8,767.70
  4. Step 4: Simplify right side
    14,065.70x = 170,260,658.30
  5. Step 5: Solve for x
    x = 170,260,658.30/14,065.70
  6. Step 6: Final answer
    x = 12,104.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.