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Finding the Fourth Proportional to 98,981.80, 148,505.28 and 65,832.28

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Solution

The fourth proportional to 98,981.80, 148,505.28 and 65,832.28 is: 98,770.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,981.80 : 148,505.28 = 65,832.28 : x
  2. Step 2: Convert to fraction form
    98,981.80/148,505.28 = 65,832.28/x
  3. Step 3: Cross multiply
    98,981.80x = 148,505.28 × 65,832.28
  4. Step 4: Simplify right side
    98,981.80x = 9,776,441,174.44
  5. Step 5: Solve for x
    x = 9,776,441,174.44/98,981.80
  6. Step 6: Final answer
    x = 98,770.09

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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.