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Finding the Fourth Proportional to 38,499.80, 57,749.70 and 35,619.80

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Solution

The fourth proportional to 38,499.80, 57,749.70 and 35,619.80 is: 53,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,499.80 : 57,749.70 = 35,619.80 : x
  2. Step 2: Convert to fraction form
    38,499.80/57,749.70 = 35,619.80/x
  3. Step 3: Cross multiply
    38,499.80x = 57,749.70 × 35,619.80
  4. Step 4: Simplify right side
    38,499.80x = 2,057,032,764.06
  5. Step 5: Solve for x
    x = 2,057,032,764.06/38,499.80
  6. Step 6: Final answer
    x = 53,429.70

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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.