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Finding the Fourth Proportional to 178,931.01, 268,396.59 and 84,091.59

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Solution

The fourth proportional to 178,931.01, 268,396.59 and 84,091.59 is: 126,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,931.01 : 268,396.59 = 84,091.59 : x
  2. Step 2: Convert to fraction form
    178,931.01/268,396.59 = 84,091.59/x
  3. Step 3: Cross multiply
    178,931.01x = 268,396.59 × 84,091.59
  4. Step 4: Simplify right side
    178,931.01x = 22,569,896,003.68
  5. Step 5: Solve for x
    x = 22,569,896,003.68/178,931.01
  6. Step 6: Final answer
    x = 126,137.42

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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.