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Finding the Fourth Proportional to 2,992.33, 4,488.67 and 912.48

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Solution

The fourth proportional to 2,992.33, 4,488.67 and 912.48 is: 1,368.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.33 : 4,488.67 = 912.48 : x
  2. Step 2: Convert to fraction form
    2,992.33/4,488.67 = 912.48/x
  3. Step 3: Cross multiply
    2,992.33x = 4,488.67 × 912.48
  4. Step 4: Simplify right side
    2,992.33x = 4,095,821.60
  5. Step 5: Solve for x
    x = 4,095,821.60/2,992.33
  6. Step 6: Final answer
    x = 1,368.77

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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.