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Finding the Fourth Proportional to 2,193.84, 3,291.60 and 896.40

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Solution

The fourth proportional to 2,193.84, 3,291.60 and 896.40 is: 1,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.84 : 3,291.60 = 896.40 : x
  2. Step 2: Convert to fraction form
    2,193.84/3,291.60 = 896.40/x
  3. Step 3: Cross multiply
    2,193.84x = 3,291.60 × 896.40
  4. Step 4: Simplify right side
    2,193.84x = 2,950,590.24
  5. Step 5: Solve for x
    x = 2,950,590.24/2,193.84
  6. Step 6: Final answer
    x = 1,344.94

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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.