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Finding the Fourth Proportional to 14,296.55, 19,728.97 and 7,922.89

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Solution

The fourth proportional to 14,296.55, 19,728.97 and 7,922.89 is: 10,933.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,296.55 : 19,728.97 = 7,922.89 : x
  2. Step 2: Convert to fraction form
    14,296.55/19,728.97 = 7,922.89/x
  3. Step 3: Cross multiply
    14,296.55x = 19,728.97 × 7,922.89
  4. Step 4: Simplify right side
    14,296.55x = 156,310,459.12
  5. Step 5: Solve for x
    x = 156,310,459.12/14,296.55
  6. Step 6: Final answer
    x = 10,933.44

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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.