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Finding the Fourth Proportional to 29,797.80, 41,140.20 and 18,479.32

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Solution

The fourth proportional to 29,797.80, 41,140.20 and 18,479.32 is: 25,513.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,797.80 : 41,140.20 = 18,479.32 : x
  2. Step 2: Convert to fraction form
    29,797.80/41,140.20 = 18,479.32/x
  3. Step 3: Cross multiply
    29,797.80x = 41,140.20 × 18,479.32
  4. Step 4: Simplify right side
    29,797.80x = 760,242,920.66
  5. Step 5: Solve for x
    x = 760,242,920.66/29,797.80
  6. Step 6: Final answer
    x = 25,513.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.