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Finding the Fourth Proportional to 191,122.38, 263,753.95 and 105,084.96

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Solution

The fourth proportional to 191,122.38, 263,753.95 and 105,084.96 is: 145,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,122.38 : 263,753.95 = 105,084.96 : x
  2. Step 2: Convert to fraction form
    191,122.38/263,753.95 = 105,084.96/x
  3. Step 3: Cross multiply
    191,122.38x = 263,753.95 × 105,084.96
  4. Step 4: Simplify right side
    191,122.38x = 27,716,573,285.59
  5. Step 5: Solve for x
    x = 27,716,573,285.59/191,122.38
  6. Step 6: Final answer
    x = 145,020.03

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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.