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Finding the Fourth Proportional to 43,709.42, 65,548.04 and 15,621.88

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Solution

The fourth proportional to 43,709.42, 65,548.04 and 15,621.88 is: 23,427.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,709.42 : 65,548.04 = 15,621.88 : x
  2. Step 2: Convert to fraction form
    43,709.42/65,548.04 = 15,621.88/x
  3. Step 3: Cross multiply
    43,709.42x = 65,548.04 × 15,621.88
  4. Step 4: Simplify right side
    43,709.42x = 1,023,983,287.38
  5. Step 5: Solve for x
    x = 1,023,983,287.38/43,709.42
  6. Step 6: Final answer
    x = 23,427.06

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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.