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Finding the Fourth Proportional to 7,220.73, 9,964.08 and 4,866.06

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Solution

The fourth proportional to 7,220.73, 9,964.08 and 4,866.06 is: 6,714.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.73 : 9,964.08 = 4,866.06 : x
  2. Step 2: Convert to fraction form
    7,220.73/9,964.08 = 4,866.06/x
  3. Step 3: Cross multiply
    7,220.73x = 9,964.08 × 4,866.06
  4. Step 4: Simplify right side
    7,220.73x = 48,485,811.12
  5. Step 5: Solve for x
    x = 48,485,811.12/7,220.73
  6. Step 6: Final answer
    x = 6,714.81

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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.