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Finding the Fourth Proportional to 7,029.12, 9,700.02 and 3,885.24

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Solution

The fourth proportional to 7,029.12, 9,700.02 and 3,885.24 is: 5,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,029.12 : 9,700.02 = 3,885.24 : x
  2. Step 2: Convert to fraction form
    7,029.12/9,700.02 = 3,885.24/x
  3. Step 3: Cross multiply
    7,029.12x = 9,700.02 × 3,885.24
  4. Step 4: Simplify right side
    7,029.12x = 37,686,905.70
  5. Step 5: Solve for x
    x = 37,686,905.70/7,029.12
  6. Step 6: Final answer
    x = 5,361.54

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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.