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Finding the Fourth Proportional to 8,465.64, 12,701.80 and 2,622.70

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Solution

The fourth proportional to 8,465.64, 12,701.80 and 2,622.70 is: 3,935.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.64 : 12,701.80 = 2,622.70 : x
  2. Step 2: Convert to fraction form
    8,465.64/12,701.80 = 2,622.70/x
  3. Step 3: Cross multiply
    8,465.64x = 12,701.80 × 2,622.70
  4. Step 4: Simplify right side
    8,465.64x = 33,312,997.75
  5. Step 5: Solve for x
    x = 33,312,997.75/8,465.64
  6. Step 6: Final answer
    x = 3,935.09

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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.