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Finding the Fourth Proportional to 1,893.84, 2,615.40 and 1,784.76

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Solution

The fourth proportional to 1,893.84, 2,615.40 and 1,784.76 is: 2,464.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.84 : 2,615.40 = 1,784.76 : x
  2. Step 2: Convert to fraction form
    1,893.84/2,615.40 = 1,784.76/x
  3. Step 3: Cross multiply
    1,893.84x = 2,615.40 × 1,784.76
  4. Step 4: Simplify right side
    1,893.84x = 4,667,861.30
  5. Step 5: Solve for x
    x = 4,667,861.30/1,893.84
  6. Step 6: Final answer
    x = 2,464.76

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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.