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Finding the Fourth Proportional to 10,762.70, 16,138.65 and 4,912.70

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Solution

The fourth proportional to 10,762.70, 16,138.65 and 4,912.70 is: 7,366.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,762.70 : 16,138.65 = 4,912.70 : x
  2. Step 2: Convert to fraction form
    10,762.70/16,138.65 = 4,912.70/x
  3. Step 3: Cross multiply
    10,762.70x = 16,138.65 × 4,912.70
  4. Step 4: Simplify right side
    10,762.70x = 79,284,345.86
  5. Step 5: Solve for x
    x = 79,284,345.86/10,762.70
  6. Step 6: Final answer
    x = 7,366.59

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1.5x scale

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.