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Finding the Fourth Proportional to 10,718.16, 16,051.16 and 7,422

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Solution

The fourth proportional to 10,718.16, 16,051.16 and 7,422 is: 11,114.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,718.16 : 16,051.16 = 7,422 : x
  2. Step 2: Convert to fraction form
    10,718.16/16,051.16 = 7,422/x
  3. Step 3: Cross multiply
    10,718.16x = 16,051.16 × 7,422
  4. Step 4: Simplify right side
    10,718.16x = 119,131,709.52
  5. Step 5: Solve for x
    x = 119,131,709.52/10,718.16
  6. Step 6: Final answer
    x = 11,114.94

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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.