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Finding the Fourth Proportional to 194,893.50, 268,953.17 and 105,469.50

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Solution

The fourth proportional to 194,893.50, 268,953.17 and 105,469.50 is: 145,547.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,893.50 : 268,953.17 = 105,469.50 : x
  2. Step 2: Convert to fraction form
    194,893.50/268,953.17 = 105,469.50/x
  3. Step 3: Cross multiply
    194,893.50x = 268,953.17 × 105,469.50
  4. Step 4: Simplify right side
    194,893.50x = 28,366,355,835.97
  5. Step 5: Solve for x
    x = 28,366,355,835.97/194,893.50
  6. Step 6: Final answer
    x = 145,547.98

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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.