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Finding the Fourth Proportional to 30,799.99, 46,201.29 and 12,078.37

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Solution

The fourth proportional to 30,799.99, 46,201.29 and 12,078.37 is: 18,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,799.99 : 46,201.29 = 12,078.37 : x
  2. Step 2: Convert to fraction form
    30,799.99/46,201.29 = 12,078.37/x
  3. Step 3: Cross multiply
    30,799.99x = 46,201.29 × 12,078.37
  4. Step 4: Simplify right side
    30,799.99x = 558,036,275.10
  5. Step 5: Solve for x
    x = 558,036,275.10/30,799.99
  6. Step 6: Final answer
    x = 18,118.07

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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.