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Finding the Fourth Proportional to 112,131, 168,199.74 and 29,025

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Solution

The fourth proportional to 112,131, 168,199.74 and 29,025 is: 43,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,131 : 168,199.74 = 29,025 : x
  2. Step 2: Convert to fraction form
    112,131/168,199.74 = 29,025/x
  3. Step 3: Cross multiply
    112,131x = 168,199.74 × 29,025
  4. Step 4: Simplify right side
    112,131x = 4,881,997,453.50
  5. Step 5: Solve for x
    x = 4,881,997,453.50/112,131
  6. Step 6: Final answer
    x = 43,538.34

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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.