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Finding the Fourth Proportional to 36,290.99, 54,385.43 and 28,862.48

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Solution

The fourth proportional to 36,290.99, 54,385.43 and 28,862.48 is: 43,253.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,290.99 : 54,385.43 = 28,862.48 : x
  2. Step 2: Convert to fraction form
    36,290.99/54,385.43 = 28,862.48/x
  3. Step 3: Cross multiply
    36,290.99x = 54,385.43 × 28,862.48
  4. Step 4: Simplify right side
    36,290.99x = 1,569,697,969.43
  5. Step 5: Solve for x
    x = 1,569,697,969.43/36,290.99
  6. Step 6: Final answer
    x = 43,253.11

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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.