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Finding the Fourth Proportional to 7,680.65, 10,605.87 and 4,852.94

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Solution

The fourth proportional to 7,680.65, 10,605.87 and 4,852.94 is: 6,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.65 : 10,605.87 = 4,852.94 : x
  2. Step 2: Convert to fraction form
    7,680.65/10,605.87 = 4,852.94/x
  3. Step 3: Cross multiply
    7,680.65x = 10,605.87 × 4,852.94
  4. Step 4: Simplify right side
    7,680.65x = 51,469,597.73
  5. Step 5: Solve for x
    x = 51,469,597.73/7,680.65
  6. Step 6: Final answer
    x = 6,701.21

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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.