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Finding the Fourth Proportional to 19,177.12, 28,776.86 and 8,083.12

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Solution

The fourth proportional to 19,177.12, 28,776.86 and 8,083.12 is: 12,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,177.12 : 28,776.86 = 8,083.12 : x
  2. Step 2: Convert to fraction form
    19,177.12/28,776.86 = 8,083.12/x
  3. Step 3: Cross multiply
    19,177.12x = 28,776.86 × 8,083.12
  4. Step 4: Simplify right side
    19,177.12x = 232,606,812.60
  5. Step 5: Solve for x
    x = 232,606,812.60/19,177.12
  6. Step 6: Final answer
    x = 12,129.39

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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.