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Finding the Fourth Proportional to 30,936.65, 46,373.26 and 12,209.11

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Solution

The fourth proportional to 30,936.65, 46,373.26 and 12,209.11 is: 18,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.65 : 46,373.26 = 12,209.11 : x
  2. Step 2: Convert to fraction form
    30,936.65/46,373.26 = 12,209.11/x
  3. Step 3: Cross multiply
    30,936.65x = 46,373.26 × 12,209.11
  4. Step 4: Simplify right side
    30,936.65x = 566,176,232.40
  5. Step 5: Solve for x
    x = 566,176,232.40/30,936.65
  6. Step 6: Final answer
    x = 18,301.15

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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.