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Finding the Fourth Proportional to 57,422, 79,247.40 and 32,271.68

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Solution

The fourth proportional to 57,422, 79,247.40 and 32,271.68 is: 44,537.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,422 : 79,247.40 = 32,271.68 : x
  2. Step 2: Convert to fraction form
    57,422/79,247.40 = 32,271.68/x
  3. Step 3: Cross multiply
    57,422x = 79,247.40 × 32,271.68
  4. Step 4: Simplify right side
    57,422x = 2,557,446,733.63
  5. Step 5: Solve for x
    x = 2,557,446,733.63/57,422
  6. Step 6: Final answer
    x = 44,537.75

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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.