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Finding the Fourth Proportional to 72,958.48, 109,518.36 and 52,274.32

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Solution

The fourth proportional to 72,958.48, 109,518.36 and 52,274.32 is: 78,469.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,958.48 : 109,518.36 = 52,274.32 : x
  2. Step 2: Convert to fraction form
    72,958.48/109,518.36 = 52,274.32/x
  3. Step 3: Cross multiply
    72,958.48x = 109,518.36 × 52,274.32
  4. Step 4: Simplify right side
    72,958.48x = 5,724,997,796.52
  5. Step 5: Solve for x
    x = 5,724,997,796.52/72,958.48
  6. Step 6: Final answer
    x = 78,469.26

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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.