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Finding the Fourth Proportional to 8,892.64, 12,271.75 and 4,913.49

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Solution

The fourth proportional to 8,892.64, 12,271.75 and 4,913.49 is: 6,780.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,892.64 : 12,271.75 = 4,913.49 : x
  2. Step 2: Convert to fraction form
    8,892.64/12,271.75 = 4,913.49/x
  3. Step 3: Cross multiply
    8,892.64x = 12,271.75 × 4,913.49
  4. Step 4: Simplify right side
    8,892.64x = 60,297,120.91
  5. Step 5: Solve for x
    x = 60,297,120.91/8,892.64
  6. Step 6: Final answer
    x = 6,780.56

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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.