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Finding the Fourth Proportional to 30,935.99, 46,371.43 and 19,699.87

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Solution

The fourth proportional to 30,935.99, 46,371.43 and 19,699.87 is: 29,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.99 : 46,371.43 = 19,699.87 : x
  2. Step 2: Convert to fraction form
    30,935.99/46,371.43 = 19,699.87/x
  3. Step 3: Cross multiply
    30,935.99x = 46,371.43 × 19,699.87
  4. Step 4: Simplify right side
    30,935.99x = 913,511,142.71
  5. Step 5: Solve for x
    x = 913,511,142.71/30,935.99
  6. Step 6: Final answer
    x = 29,529.07

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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.