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Finding the Fourth Proportional to 28,761.94, 43,149.05 and 9,042.03

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Solution

The fourth proportional to 28,761.94, 43,149.05 and 9,042.03 is: 13,564.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.94 : 43,149.05 = 9,042.03 : x
  2. Step 2: Convert to fraction form
    28,761.94/43,149.05 = 9,042.03/x
  3. Step 3: Cross multiply
    28,761.94x = 43,149.05 × 9,042.03
  4. Step 4: Simplify right side
    28,761.94x = 390,155,044.13
  5. Step 5: Solve for x
    x = 390,155,044.13/28,761.94
  6. Step 6: Final answer
    x = 13,564.98

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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.