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Finding the Fourth Proportional to 29,435.25, 40,621.05 and 16,860

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Solution

The fourth proportional to 29,435.25, 40,621.05 and 16,860 is: 23,267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,435.25 : 40,621.05 = 16,860 : x
  2. Step 2: Convert to fraction form
    29,435.25/40,621.05 = 16,860/x
  3. Step 3: Cross multiply
    29,435.25x = 40,621.05 × 16,860
  4. Step 4: Simplify right side
    29,435.25x = 684,870,903
  5. Step 5: Solve for x
    x = 684,870,903/29,435.25
  6. Step 6: Final answer
    x = 23,267.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.