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Finding the Fourth Proportional to 99,270.53, 148,905.82 and 36,078.92

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Solution

The fourth proportional to 99,270.53, 148,905.82 and 36,078.92 is: 54,118.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,270.53 : 148,905.82 = 36,078.92 : x
  2. Step 2: Convert to fraction form
    99,270.53/148,905.82 = 36,078.92/x
  3. Step 3: Cross multiply
    99,270.53x = 148,905.82 × 36,078.92
  4. Step 4: Simplify right side
    99,270.53x = 5,372,360,422.79
  5. Step 5: Solve for x
    x = 5,372,360,422.79/99,270.53
  6. Step 6: Final answer
    x = 54,118.38

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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.