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Finding the Fourth Proportional to 3,337.74, 4,606.74 and 1,940.76

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Solution

The fourth proportional to 3,337.74, 4,606.74 and 1,940.76 is: 2,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,337.74 : 4,606.74 = 1,940.76 : x
  2. Step 2: Convert to fraction form
    3,337.74/4,606.74 = 1,940.76/x
  3. Step 3: Cross multiply
    3,337.74x = 4,606.74 × 1,940.76
  4. Step 4: Simplify right side
    3,337.74x = 8,940,576.72
  5. Step 5: Solve for x
    x = 8,940,576.72/3,337.74
  6. Step 6: Final answer
    x = 2,678.63

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Find fourth proportional to 1,668.87, 2,303.37 and 970.38
Half scale
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Double scale
Find fourth proportional to 3,338.74, 4,608.12 and 1,941.76
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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.