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Finding the Fourth Proportional to 29,148.61, 43,722.91 and 8,372.11

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Solution

The fourth proportional to 29,148.61, 43,722.91 and 8,372.11 is: 12,558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,148.61 : 43,722.91 = 8,372.11 : x
  2. Step 2: Convert to fraction form
    29,148.61/43,722.91 = 8,372.11/x
  3. Step 3: Cross multiply
    29,148.61x = 43,722.91 × 8,372.11
  4. Step 4: Simplify right side
    29,148.61x = 366,053,018.72
  5. Step 5: Solve for x
    x = 366,053,018.72/29,148.61
  6. Step 6: Final answer
    x = 12,558.16

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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.