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Finding the Fourth Proportional to 10,911.56, 16,368.92 and 3,513.56

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Solution

The fourth proportional to 10,911.56, 16,368.92 and 3,513.56 is: 5,270.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.56 : 16,368.92 = 3,513.56 : x
  2. Step 2: Convert to fraction form
    10,911.56/16,368.92 = 3,513.56/x
  3. Step 3: Cross multiply
    10,911.56x = 16,368.92 × 3,513.56
  4. Step 4: Simplify right side
    10,911.56x = 57,513,083.14
  5. Step 5: Solve for x
    x = 57,513,083.14/10,911.56
  6. Step 6: Final answer
    x = 5,270.84

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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.