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Finding the Fourth Proportional to 28,969.44, 43,449.12 and 11,444.40

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Solution

The fourth proportional to 28,969.44, 43,449.12 and 11,444.40 is: 17,164.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.44 : 43,449.12 = 11,444.40 : x
  2. Step 2: Convert to fraction form
    28,969.44/43,449.12 = 11,444.40/x
  3. Step 3: Cross multiply
    28,969.44x = 43,449.12 × 11,444.40
  4. Step 4: Simplify right side
    28,969.44x = 497,249,108.93
  5. Step 5: Solve for x
    x = 497,249,108.93/28,969.44
  6. Step 6: Final answer
    x = 17,164.61

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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.