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Finding the Fourth Proportional to 15,879.16, 23,830.90 and 6,651.64

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Solution

The fourth proportional to 15,879.16, 23,830.90 and 6,651.64 is: 9,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879.16 : 23,830.90 = 6,651.64 : x
  2. Step 2: Convert to fraction form
    15,879.16/23,830.90 = 6,651.64/x
  3. Step 3: Cross multiply
    15,879.16x = 23,830.90 × 6,651.64
  4. Step 4: Simplify right side
    15,879.16x = 158,514,567.68
  5. Step 5: Solve for x
    x = 158,514,567.68/15,879.16
  6. Step 6: Final answer
    x = 9,982.55

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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.