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Finding the Fourth Proportional to 31,205.15, 46,805.90 and 9,018.03

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Solution

The fourth proportional to 31,205.15, 46,805.90 and 9,018.03 is: 13,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,205.15 : 46,805.90 = 9,018.03 : x
  2. Step 2: Convert to fraction form
    31,205.15/46,805.90 = 9,018.03/x
  3. Step 3: Cross multiply
    31,205.15x = 46,805.90 × 9,018.03
  4. Step 4: Simplify right side
    31,205.15x = 422,097,191.54
  5. Step 5: Solve for x
    x = 422,097,191.54/31,205.15
  6. Step 6: Final answer
    x = 13,526.52

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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.