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Finding the Fourth Proportional to 98,687.70, 148,089.90 and 36,401.94

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Solution

The fourth proportional to 98,687.70, 148,089.90 and 36,401.94 is: 54,624.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,687.70 : 148,089.90 = 36,401.94 : x
  2. Step 2: Convert to fraction form
    98,687.70/148,089.90 = 36,401.94/x
  3. Step 3: Cross multiply
    98,687.70x = 148,089.90 × 36,401.94
  4. Step 4: Simplify right side
    98,687.70x = 5,390,759,654.41
  5. Step 5: Solve for x
    x = 5,390,759,654.41/98,687.70
  6. Step 6: Final answer
    x = 54,624.43

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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.