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Finding the Fourth Proportional to 6,570.18, 9,857.70 and 3,105

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Solution

The fourth proportional to 6,570.18, 9,857.70 and 3,105 is: 4,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,570.18 : 9,857.70 = 3,105 : x
  2. Step 2: Convert to fraction form
    6,570.18/9,857.70 = 3,105/x
  3. Step 3: Cross multiply
    6,570.18x = 9,857.70 × 3,105
  4. Step 4: Simplify right side
    6,570.18x = 30,608,158.50
  5. Step 5: Solve for x
    x = 30,608,158.50/6,570.18
  6. Step 6: Final answer
    x = 4,658.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.