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Finding the Fourth Proportional to 7,029.55, 9,700.62 and 3,885.73

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Solution

The fourth proportional to 7,029.55, 9,700.62 and 3,885.73 is: 5,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,029.55 : 9,700.62 = 3,885.73 : x
  2. Step 2: Convert to fraction form
    7,029.55/9,700.62 = 3,885.73/x
  3. Step 3: Cross multiply
    7,029.55x = 9,700.62 × 3,885.73
  4. Step 4: Simplify right side
    7,029.55x = 37,693,990.15
  5. Step 5: Solve for x
    x = 37,693,990.15/7,029.55
  6. Step 6: Final answer
    x = 5,362.22

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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.