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Finding the Fourth Proportional to 7,673.80, 10,757.90 and 7,673.80

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Solution

The fourth proportional to 7,673.80, 10,757.90 and 7,673.80 is: 10,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,673.80 : 10,757.90 = 7,673.80 : x
  2. Step 2: Convert to fraction form
    7,673.80/10,757.90 = 7,673.80/x
  3. Step 3: Cross multiply
    7,673.80x = 10,757.90 × 7,673.80
  4. Step 4: Simplify right side
    7,673.80x = 82,553,973.02
  5. Step 5: Solve for x
    x = 82,553,973.02/7,673.80
  6. Step 6: Final answer
    x = 10,757.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.