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Finding the Fourth Proportional to 6,709.80, 9,245.70 and 4,722.60

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Solution

The fourth proportional to 6,709.80, 9,245.70 and 4,722.60 is: 6,507.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,709.80 : 9,245.70 = 4,722.60 : x
  2. Step 2: Convert to fraction form
    6,709.80/9,245.70 = 4,722.60/x
  3. Step 3: Cross multiply
    6,709.80x = 9,245.70 × 4,722.60
  4. Step 4: Simplify right side
    6,709.80x = 43,663,742.82
  5. Step 5: Solve for x
    x = 43,663,742.82/6,709.80
  6. Step 6: Final answer
    x = 6,507.46

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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.