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Finding the Fourth Proportional to 67,930.70, 101,900.73 and 28,448.06

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Solution

The fourth proportional to 67,930.70, 101,900.73 and 28,448.06 is: 42,674.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,930.70 : 101,900.73 = 28,448.06 : x
  2. Step 2: Convert to fraction form
    67,930.70/101,900.73 = 28,448.06/x
  3. Step 3: Cross multiply
    67,930.70x = 101,900.73 × 28,448.06
  4. Step 4: Simplify right side
    67,930.70x = 2,898,877,429.34
  5. Step 5: Solve for x
    x = 2,898,877,429.34/67,930.70
  6. Step 6: Final answer
    x = 42,674.04

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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.