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Finding the Fourth Proportional to 115,224.84, 172,836.84 and 45,054.72

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Solution

The fourth proportional to 115,224.84, 172,836.84 and 45,054.72 is: 67,581.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,224.84 : 172,836.84 = 45,054.72 : x
  2. Step 2: Convert to fraction form
    115,224.84/172,836.84 = 45,054.72/x
  3. Step 3: Cross multiply
    115,224.84x = 172,836.84 × 45,054.72
  4. Step 4: Simplify right side
    115,224.84x = 7,787,115,431.88
  5. Step 5: Solve for x
    x = 7,787,115,431.88/115,224.84
  6. Step 6: Final answer
    x = 67,581.92

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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.