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Finding the Fourth Proportional to 19,082.93, 28,627.43 and 7,983.90

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Solution

The fourth proportional to 19,082.93, 28,627.43 and 7,983.90 is: 11,977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,082.93 : 28,627.43 = 7,983.90 : x
  2. Step 2: Convert to fraction form
    19,082.93/28,627.43 = 7,983.90/x
  3. Step 3: Cross multiply
    19,082.93x = 28,627.43 × 7,983.90
  4. Step 4: Simplify right side
    19,082.93x = 228,558,498.46
  5. Step 5: Solve for x
    x = 228,558,498.46/19,082.93
  6. Step 6: Final answer
    x = 11,977.12

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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.