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Finding the Fourth Proportional to 43,392.61, 65,098.52 and 18,454.06

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Solution

The fourth proportional to 43,392.61, 65,098.52 and 18,454.06 is: 27,685.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,392.61 : 65,098.52 = 18,454.06 : x
  2. Step 2: Convert to fraction form
    43,392.61/65,098.52 = 18,454.06/x
  3. Step 3: Cross multiply
    43,392.61x = 65,098.52 × 18,454.06
  4. Step 4: Simplify right side
    43,392.61x = 1,201,331,576.23
  5. Step 5: Solve for x
    x = 1,201,331,576.23/43,392.61
  6. Step 6: Final answer
    x = 27,685.17

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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.