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Finding the Fourth Proportional to 254,316.56, 381,431.64 and 67,346.96

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Solution

The fourth proportional to 254,316.56, 381,431.64 and 67,346.96 is: 101,009.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,316.56 : 381,431.64 = 67,346.96 : x
  2. Step 2: Convert to fraction form
    254,316.56/381,431.64 = 67,346.96/x
  3. Step 3: Cross multiply
    254,316.56x = 381,431.64 × 67,346.96
  4. Step 4: Simplify right side
    254,316.56x = 25,688,261,401.81
  5. Step 5: Solve for x
    x = 25,688,261,401.81/254,316.56
  6. Step 6: Final answer
    x = 101,009.00

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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.