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Finding the Fourth Proportional to 112,418.84, 168,544.85 and 68,035.04

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Solution

The fourth proportional to 112,418.84, 168,544.85 and 68,035.04 is: 102,002.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,418.84 : 168,544.85 = 68,035.04 : x
  2. Step 2: Convert to fraction form
    112,418.84/168,544.85 = 68,035.04/x
  3. Step 3: Cross multiply
    112,418.84x = 168,544.85 × 68,035.04
  4. Step 4: Simplify right side
    112,418.84x = 11,466,955,443.38
  5. Step 5: Solve for x
    x = 11,466,955,443.38/112,418.84
  6. Step 6: Final answer
    x = 102,002.08

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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.