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Finding the Fourth Proportional to 19,155.69, 28,745.01 and 8,061.66

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Solution

The fourth proportional to 19,155.69, 28,745.01 and 8,061.66 is: 12,097.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.69 : 28,745.01 = 8,061.66 : x
  2. Step 2: Convert to fraction form
    19,155.69/28,745.01 = 8,061.66/x
  3. Step 3: Cross multiply
    19,155.69x = 28,745.01 × 8,061.66
  4. Step 4: Simplify right side
    19,155.69x = 231,732,497.32
  5. Step 5: Solve for x
    x = 231,732,497.32/19,155.69
  6. Step 6: Final answer
    x = 12,097.32

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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.