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Finding the Fourth Proportional to 29,045.52, 43,568.42 and 7,985.88

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Solution

The fourth proportional to 29,045.52, 43,568.42 and 7,985.88 is: 11,978.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,045.52 : 43,568.42 = 7,985.88 : x
  2. Step 2: Convert to fraction form
    29,045.52/43,568.42 = 7,985.88/x
  3. Step 3: Cross multiply
    29,045.52x = 43,568.42 × 7,985.88
  4. Step 4: Simplify right side
    29,045.52x = 347,932,133.98
  5. Step 5: Solve for x
    x = 347,932,133.98/29,045.52
  6. Step 6: Final answer
    x = 11,978.86

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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.