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Finding the Fourth Proportional to 10,791.61, 16,189.64 and 4,551.64

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Solution

The fourth proportional to 10,791.61, 16,189.64 and 4,551.64 is: 6,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.61 : 16,189.64 = 4,551.64 : x
  2. Step 2: Convert to fraction form
    10,791.61/16,189.64 = 4,551.64/x
  3. Step 3: Cross multiply
    10,791.61x = 16,189.64 × 4,551.64
  4. Step 4: Simplify right side
    10,791.61x = 73,689,457.91
  5. Step 5: Solve for x
    x = 73,689,457.91/10,791.61
  6. Step 6: Final answer
    x = 6,828.40

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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.