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Finding the Fourth Proportional to 115,916.30, 173,874.45 and 68,482.70

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Solution

The fourth proportional to 115,916.30, 173,874.45 and 68,482.70 is: 102,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,916.30 : 173,874.45 = 68,482.70 : x
  2. Step 2: Convert to fraction form
    115,916.30/173,874.45 = 68,482.70/x
  3. Step 3: Cross multiply
    115,916.30x = 173,874.45 × 68,482.70
  4. Step 4: Simplify right side
    115,916.30x = 11,907,391,797.02
  5. Step 5: Solve for x
    x = 11,907,391,797.02/115,916.30
  6. Step 6: Final answer
    x = 102,724.05

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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.