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Finding the Fourth Proportional to 98,792.56, 136,334.82 and 56,353.60

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Solution

The fourth proportional to 98,792.56, 136,334.82 and 56,353.60 is: 77,768.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,792.56 : 136,334.82 = 56,353.60 : x
  2. Step 2: Convert to fraction form
    98,792.56/136,334.82 = 56,353.60/x
  3. Step 3: Cross multiply
    98,792.56x = 136,334.82 × 56,353.60
  4. Step 4: Simplify right side
    98,792.56x = 7,682,957,912.35
  5. Step 5: Solve for x
    x = 7,682,957,912.35/98,792.56
  6. Step 6: Final answer
    x = 77,768.59

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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.