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Finding the Fourth Proportional to 5,308.88, 7,963.36 and 1,611.10

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Solution

The fourth proportional to 5,308.88, 7,963.36 and 1,611.10 is: 2,416.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.88 : 7,963.36 = 1,611.10 : x
  2. Step 2: Convert to fraction form
    5,308.88/7,963.36 = 1,611.10/x
  3. Step 3: Cross multiply
    5,308.88x = 7,963.36 × 1,611.10
  4. Step 4: Simplify right side
    5,308.88x = 12,829,809.73
  5. Step 5: Solve for x
    x = 12,829,809.73/5,308.88
  6. Step 6: Final answer
    x = 2,416.67

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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.