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Finding the Fourth Proportional to 29,040.52, 43,542.06 and 12,411.40

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Solution

The fourth proportional to 29,040.52, 43,542.06 and 12,411.40 is: 18,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,040.52 : 43,542.06 = 12,411.40 : x
  2. Step 2: Convert to fraction form
    29,040.52/43,542.06 = 12,411.40/x
  3. Step 3: Cross multiply
    29,040.52x = 43,542.06 × 12,411.40
  4. Step 4: Simplify right side
    29,040.52x = 540,417,923.48
  5. Step 5: Solve for x
    x = 540,417,923.48/29,040.52
  6. Step 6: Final answer
    x = 18,609.10

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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.