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Finding the Fourth Proportional to 8,847.60, 13,271.40 and 7,616.40

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Solution

The fourth proportional to 8,847.60, 13,271.40 and 7,616.40 is: 11,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,847.60 : 13,271.40 = 7,616.40 : x
  2. Step 2: Convert to fraction form
    8,847.60/13,271.40 = 7,616.40/x
  3. Step 3: Cross multiply
    8,847.60x = 13,271.40 × 7,616.40
  4. Step 4: Simplify right side
    8,847.60x = 101,080,290.96
  5. Step 5: Solve for x
    x = 101,080,290.96/8,847.60
  6. Step 6: Final answer
    x = 11,424.60

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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.