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Finding the Fourth Proportional to 7,014.70, 10,521.95 and 2,087.67

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Solution

The fourth proportional to 7,014.70, 10,521.95 and 2,087.67 is: 3,131.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014.70 : 10,521.95 = 2,087.67 : x
  2. Step 2: Convert to fraction form
    7,014.70/10,521.95 = 2,087.67/x
  3. Step 3: Cross multiply
    7,014.70x = 10,521.95 × 2,087.67
  4. Step 4: Simplify right side
    7,014.70x = 21,966,348.92
  5. Step 5: Solve for x
    x = 21,966,348.92/7,014.70
  6. Step 6: Final answer
    x = 3,131.47

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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.