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Finding the Fourth Proportional to 111,977.40, 168,030.90 and 41,863.80

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Solution

The fourth proportional to 111,977.40, 168,030.90 and 41,863.80 is: 62,819.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,977.40 : 168,030.90 = 41,863.80 : x
  2. Step 2: Convert to fraction form
    111,977.40/168,030.90 = 41,863.80/x
  3. Step 3: Cross multiply
    111,977.40x = 168,030.90 × 41,863.80
  4. Step 4: Simplify right side
    111,977.40x = 7,034,411,991.42
  5. Step 5: Solve for x
    x = 7,034,411,991.42/111,977.40
  6. Step 6: Final answer
    x = 62,819.93

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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.