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Finding the Fourth Proportional to 124,635.92, 171,996.64 and 68,047.29

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Solution

The fourth proportional to 124,635.92, 171,996.64 and 68,047.29 is: 93,904.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,635.92 : 171,996.64 = 68,047.29 : x
  2. Step 2: Convert to fraction form
    124,635.92/171,996.64 = 68,047.29/x
  3. Step 3: Cross multiply
    124,635.92x = 171,996.64 × 68,047.29
  4. Step 4: Simplify right side
    124,635.92x = 11,703,905,070.99
  5. Step 5: Solve for x
    x = 11,703,905,070.99/124,635.92
  6. Step 6: Final answer
    x = 93,904.76

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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.