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Finding the Fourth Proportional to 191,705.67, 264,569.01 and 105,679.92

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Solution

The fourth proportional to 191,705.67, 264,569.01 and 105,679.92 is: 145,846.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,705.67 : 264,569.01 = 105,679.92 : x
  2. Step 2: Convert to fraction form
    191,705.67/264,569.01 = 105,679.92/x
  3. Step 3: Cross multiply
    191,705.67x = 264,569.01 × 105,679.92
  4. Step 4: Simplify right side
    191,705.67x = 27,959,631,811.28
  5. Step 5: Solve for x
    x = 27,959,631,811.28/191,705.67
  6. Step 6: Final answer
    x = 145,846.66

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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.