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Finding the Fourth Proportional to 118,082.58, 177,091.44 and 70,660.32

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Solution

The fourth proportional to 118,082.58, 177,091.44 and 70,660.32 is: 105,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,082.58 : 177,091.44 = 70,660.32 : x
  2. Step 2: Convert to fraction form
    118,082.58/177,091.44 = 70,660.32/x
  3. Step 3: Cross multiply
    118,082.58x = 177,091.44 × 70,660.32
  4. Step 4: Simplify right side
    118,082.58x = 12,513,337,819.66
  5. Step 5: Solve for x
    x = 12,513,337,819.66/118,082.58
  6. Step 6: Final answer
    x = 105,971.07

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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.