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Finding the Fourth Proportional to 72,042.36, 108,074.34 and 25,291.50

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Solution

The fourth proportional to 72,042.36, 108,074.34 and 25,291.50 is: 37,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,042.36 : 108,074.34 = 25,291.50 : x
  2. Step 2: Convert to fraction form
    72,042.36/108,074.34 = 25,291.50/x
  3. Step 3: Cross multiply
    72,042.36x = 108,074.34 × 25,291.50
  4. Step 4: Simplify right side
    72,042.36x = 2,733,362,170.11
  5. Step 5: Solve for x
    x = 2,733,362,170.11/72,042.36
  6. Step 6: Final answer
    x = 37,941.04

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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.