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Finding the Fourth Proportional to 112,456.76, 168,601.80 and 68,073.01

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Solution

The fourth proportional to 112,456.76, 168,601.80 and 68,073.01 is: 102,059.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,456.76 : 168,601.80 = 68,073.01 : x
  2. Step 2: Convert to fraction form
    112,456.76/168,601.80 = 68,073.01/x
  3. Step 3: Cross multiply
    112,456.76x = 168,601.80 × 68,073.01
  4. Step 4: Simplify right side
    112,456.76x = 11,477,231,851.19
  5. Step 5: Solve for x
    x = 11,477,231,851.19/112,456.76
  6. Step 6: Final answer
    x = 102,059.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.