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Finding the Fourth Proportional to 15,963.36, 23,923.08 and 8,155.86

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Solution

The fourth proportional to 15,963.36, 23,923.08 and 8,155.86 is: 12,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,963.36 : 23,923.08 = 8,155.86 : x
  2. Step 2: Convert to fraction form
    15,963.36/23,923.08 = 8,155.86/x
  3. Step 3: Cross multiply
    15,963.36x = 23,923.08 × 8,155.86
  4. Step 4: Simplify right side
    15,963.36x = 195,113,291.25
  5. Step 5: Solve for x
    x = 195,113,291.25/15,963.36
  6. Step 6: Final answer
    x = 12,222.57

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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.