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Finding the Fourth Proportional to 254,211.54, 381,315.60 and 64,670.28

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Solution

The fourth proportional to 254,211.54, 381,315.60 and 64,670.28 is: 97,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,211.54 : 381,315.60 = 64,670.28 : x
  2. Step 2: Convert to fraction form
    254,211.54/381,315.60 = 64,670.28/x
  3. Step 3: Cross multiply
    254,211.54x = 381,315.60 × 64,670.28
  4. Step 4: Simplify right side
    254,211.54x = 24,659,786,620.37
  5. Step 5: Solve for x
    x = 24,659,786,620.37/254,211.54
  6. Step 6: Final answer
    x = 97,004.98

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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.