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Finding the Fourth Proportional to 98,462.84, 135,863.62 and 55,440.11

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Solution

The fourth proportional to 98,462.84, 135,863.62 and 55,440.11 is: 76,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,462.84 : 135,863.62 = 55,440.11 : x
  2. Step 2: Convert to fraction form
    98,462.84/135,863.62 = 55,440.11/x
  3. Step 3: Cross multiply
    98,462.84x = 135,863.62 × 55,440.11
  4. Step 4: Simplify right side
    98,462.84x = 7,532,293,587.72
  5. Step 5: Solve for x
    x = 7,532,293,587.72/98,462.84
  6. Step 6: Final answer
    x = 76,498.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.