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Finding the Fourth Proportional to 9,322.64, 12,865.28 and 5,343.84

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Solution

The fourth proportional to 9,322.64, 12,865.28 and 5,343.84 is: 7,374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,322.64 : 12,865.28 = 5,343.84 : x
  2. Step 2: Convert to fraction form
    9,322.64/12,865.28 = 5,343.84/x
  3. Step 3: Cross multiply
    9,322.64x = 12,865.28 × 5,343.84
  4. Step 4: Simplify right side
    9,322.64x = 68,749,997.88
  5. Step 5: Solve for x
    x = 68,749,997.88/9,322.64
  6. Step 6: Final answer
    x = 7,374.52

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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.