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Finding the Fourth Proportional to 98,912.90, 136,499.60 and 53,592

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Solution

The fourth proportional to 98,912.90, 136,499.60 and 53,592 is: 73,956.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,912.90 : 136,499.60 = 53,592 : x
  2. Step 2: Convert to fraction form
    98,912.90/136,499.60 = 53,592/x
  3. Step 3: Cross multiply
    98,912.90x = 136,499.60 × 53,592
  4. Step 4: Simplify right side
    98,912.90x = 7,315,286,295.24
  5. Step 5: Solve for x
    x = 7,315,286,295.24/98,912.90
  6. Step 6: Final answer
    x = 73,956.85

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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.