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Finding the Fourth Proportional to 212,877.18, 317,936.17 and 192,846.63

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Solution

The fourth proportional to 212,877.18, 317,936.17 and 192,846.63 is: 288,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,877.18 : 317,936.17 = 192,846.63 : x
  2. Step 2: Convert to fraction form
    212,877.18/317,936.17 = 192,846.63/x
  3. Step 3: Cross multiply
    212,877.18x = 317,936.17 × 192,846.63
  4. Step 4: Simplify right side
    212,877.18x = 61,312,920,372.93
  5. Step 5: Solve for x
    x = 61,312,920,372.93/212,877.18
  6. Step 6: Final answer
    x = 288,020.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.