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Finding the Fourth Proportional to 98,915.96, 148,311.50 and 54,573.62

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Solution

The fourth proportional to 98,915.96, 148,311.50 and 54,573.62 is: 81,825.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,915.96 : 148,311.50 = 54,573.62 : x
  2. Step 2: Convert to fraction form
    98,915.96/148,311.50 = 54,573.62/x
  3. Step 3: Cross multiply
    98,915.96x = 148,311.50 × 54,573.62
  4. Step 4: Simplify right side
    98,915.96x = 8,093,894,428.20
  5. Step 5: Solve for x
    x = 8,093,894,428.20/98,915.96
  6. Step 6: Final answer
    x = 81,825.97

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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.