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Finding the Fourth Proportional to 112,433.70, 168,650.55 and 105,872.70

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Solution

The fourth proportional to 112,433.70, 168,650.55 and 105,872.70 is: 158,809.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,433.70 : 168,650.55 = 105,872.70 : x
  2. Step 2: Convert to fraction form
    112,433.70/168,650.55 = 105,872.70/x
  3. Step 3: Cross multiply
    112,433.70x = 168,650.55 × 105,872.70
  4. Step 4: Simplify right side
    112,433.70x = 17,855,489,084.99
  5. Step 5: Solve for x
    x = 17,855,489,084.99/112,433.70
  6. Step 6: Final answer
    x = 158,809.05

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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.