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Finding the Fourth Proportional to 49,211.80, 73,817.70 and 18,059.20

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Solution

The fourth proportional to 49,211.80, 73,817.70 and 18,059.20 is: 27,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,211.80 : 73,817.70 = 18,059.20 : x
  2. Step 2: Convert to fraction form
    49,211.80/73,817.70 = 18,059.20/x
  3. Step 3: Cross multiply
    49,211.80x = 73,817.70 × 18,059.20
  4. Step 4: Simplify right side
    49,211.80x = 1,333,088,607.84
  5. Step 5: Solve for x
    x = 1,333,088,607.84/49,211.80
  6. Step 6: Final answer
    x = 27,088.80

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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.