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Finding the Fourth Proportional to 56,590.44, 84,871.80 and 20,561.01

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Solution

The fourth proportional to 56,590.44, 84,871.80 and 20,561.01 is: 30,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,590.44 : 84,871.80 = 20,561.01 : x
  2. Step 2: Convert to fraction form
    56,590.44/84,871.80 = 20,561.01/x
  3. Step 3: Cross multiply
    56,590.44x = 84,871.80 × 20,561.01
  4. Step 4: Simplify right side
    56,590.44x = 1,745,049,928.52
  5. Step 5: Solve for x
    x = 1,745,049,928.52/56,590.44
  6. Step 6: Final answer
    x = 30,836.48

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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.