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Finding the Fourth Proportional to 74,605.60, 111,969.60 and 74,022.40

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Solution

The fourth proportional to 74,605.60, 111,969.60 and 74,022.40 is: 111,094.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,605.60 : 111,969.60 = 74,022.40 : x
  2. Step 2: Convert to fraction form
    74,605.60/111,969.60 = 74,022.40/x
  3. Step 3: Cross multiply
    74,605.60x = 111,969.60 × 74,022.40
  4. Step 4: Simplify right side
    74,605.60x = 8,288,258,519.04
  5. Step 5: Solve for x
    x = 8,288,258,519.04/74,605.60
  6. Step 6: Final answer
    x = 111,094.32

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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.