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Finding the Fourth Proportional to 43,357.38, 65,034.80 and 19,647.78

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Solution

The fourth proportional to 43,357.38, 65,034.80 and 19,647.78 is: 29,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,357.38 : 65,034.80 = 19,647.78 : x
  2. Step 2: Convert to fraction form
    43,357.38/65,034.80 = 19,647.78/x
  3. Step 3: Cross multiply
    43,357.38x = 65,034.80 × 19,647.78
  4. Step 4: Simplify right side
    43,357.38x = 1,277,789,540.12
  5. Step 5: Solve for x
    x = 1,277,789,540.12/43,357.38
  6. Step 6: Final answer
    x = 29,471.10

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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.