Home / 53,272.40-79,908.60-19,993.55

Finding the Fourth Proportional to 53,272.40, 79,908.60 and 19,993.55

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Solution

The fourth proportional to 53,272.40, 79,908.60 and 19,993.55 is: 29,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,272.40 : 79,908.60 = 19,993.55 : x
  2. Step 2: Convert to fraction form
    53,272.40/79,908.60 = 19,993.55/x
  3. Step 3: Cross multiply
    53,272.40x = 79,908.60 × 19,993.55
  4. Step 4: Simplify right side
    53,272.40x = 1,597,656,589.53
  5. Step 5: Solve for x
    x = 1,597,656,589.53/53,272.40
  6. Step 6: Final answer
    x = 29,990.33

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Half scale
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Double scale
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Similar ratio
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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.