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Finding the Fourth Proportional to 14,579.80, 21,879.06 and 5,702.20

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Solution

The fourth proportional to 14,579.80, 21,879.06 and 5,702.20 is: 8,556.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.80 : 21,879.06 = 5,702.20 : x
  2. Step 2: Convert to fraction form
    14,579.80/21,879.06 = 5,702.20/x
  3. Step 3: Cross multiply
    14,579.80x = 21,879.06 × 5,702.20
  4. Step 4: Simplify right side
    14,579.80x = 124,758,775.93
  5. Step 5: Solve for x
    x = 124,758,775.93/14,579.80
  6. Step 6: Final answer
    x = 8,556.96

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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.