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Finding the Fourth Proportional to 12,359.64, 17,056.74 and 6,770.64

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Solution

The fourth proportional to 12,359.64, 17,056.74 and 6,770.64 is: 9,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.64 : 17,056.74 = 6,770.64 : x
  2. Step 2: Convert to fraction form
    12,359.64/17,056.74 = 6,770.64/x
  3. Step 3: Cross multiply
    12,359.64x = 17,056.74 × 6,770.64
  4. Step 4: Simplify right side
    12,359.64x = 115,485,046.11
  5. Step 5: Solve for x
    x = 115,485,046.11/12,359.64
  6. Step 6: Final answer
    x = 9,343.72

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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.