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Finding the Fourth Proportional to 74,430.60, 111,645.90 and 44,906.10

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Solution

The fourth proportional to 74,430.60, 111,645.90 and 44,906.10 is: 67,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,430.60 : 111,645.90 = 44,906.10 : x
  2. Step 2: Convert to fraction form
    74,430.60/111,645.90 = 44,906.10/x
  3. Step 3: Cross multiply
    74,430.60x = 111,645.90 × 44,906.10
  4. Step 4: Simplify right side
    74,430.60x = 5,013,581,949.99
  5. Step 5: Solve for x
    x = 5,013,581,949.99/74,430.60
  6. Step 6: Final answer
    x = 67,359.15

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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.