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Finding the Fourth Proportional to 72,752.64, 109,121.28 and 26,004.48

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Solution

The fourth proportional to 72,752.64, 109,121.28 and 26,004.48 is: 39,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,752.64 : 109,121.28 = 26,004.48 : x
  2. Step 2: Convert to fraction form
    72,752.64/109,121.28 = 26,004.48/x
  3. Step 3: Cross multiply
    72,752.64x = 109,121.28 × 26,004.48
  4. Step 4: Simplify right side
    72,752.64x = 2,837,642,143.33
  5. Step 5: Solve for x
    x = 2,837,642,143.33/72,752.64
  6. Step 6: Final answer
    x = 39,003.97

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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.