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Finding the Fourth Proportional to 7,810.26, 10,772.52 and 4,974.84

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Solution

The fourth proportional to 7,810.26, 10,772.52 and 4,974.84 is: 6,861.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.26 : 10,772.52 = 4,974.84 : x
  2. Step 2: Convert to fraction form
    7,810.26/10,772.52 = 4,974.84/x
  3. Step 3: Cross multiply
    7,810.26x = 10,772.52 × 4,974.84
  4. Step 4: Simplify right side
    7,810.26x = 53,591,563.40
  5. Step 5: Solve for x
    x = 53,591,563.40/7,810.26
  6. Step 6: Final answer
    x = 6,861.69

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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.