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Finding the Fourth Proportional to 12,300.70, 16,974.87 and 6,711.58

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Solution

The fourth proportional to 12,300.70, 16,974.87 and 6,711.58 is: 9,261.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,300.70 : 16,974.87 = 6,711.58 : x
  2. Step 2: Convert to fraction form
    12,300.70/16,974.87 = 6,711.58/x
  3. Step 3: Cross multiply
    12,300.70x = 16,974.87 × 6,711.58
  4. Step 4: Simplify right side
    12,300.70x = 113,928,197.99
  5. Step 5: Solve for x
    x = 113,928,197.99/12,300.70
  6. Step 6: Final answer
    x = 9,261.93

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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.