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Finding the Fourth Proportional to 7,401.64, 10,205.04 and 6,220.12

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Solution

The fourth proportional to 7,401.64, 10,205.04 and 6,220.12 is: 8,576.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,401.64 : 10,205.04 = 6,220.12 : x
  2. Step 2: Convert to fraction form
    7,401.64/10,205.04 = 6,220.12/x
  3. Step 3: Cross multiply
    7,401.64x = 10,205.04 × 6,220.12
  4. Step 4: Simplify right side
    7,401.64x = 63,476,573.40
  5. Step 5: Solve for x
    x = 63,476,573.40/7,401.64
  6. Step 6: Final answer
    x = 8,576.01

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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.