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Finding the Fourth Proportional to 3,357.45, 5,036.40 and 892.29

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Solution

The fourth proportional to 3,357.45, 5,036.40 and 892.29 is: 1,338.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.45 : 5,036.40 = 892.29 : x
  2. Step 2: Convert to fraction form
    3,357.45/5,036.40 = 892.29/x
  3. Step 3: Cross multiply
    3,357.45x = 5,036.40 × 892.29
  4. Step 4: Simplify right side
    3,357.45x = 4,493,936.59
  5. Step 5: Solve for x
    x = 4,493,936.59/3,357.45
  6. Step 6: Final answer
    x = 1,338.50

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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.