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Finding the Fourth Proportional to 74,958.80, 112,308.60 and 35,430.80

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Solution

The fourth proportional to 74,958.80, 112,308.60 and 35,430.80 is: 53,084.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,958.80 : 112,308.60 = 35,430.80 : x
  2. Step 2: Convert to fraction form
    74,958.80/112,308.60 = 35,430.80/x
  3. Step 3: Cross multiply
    74,958.80x = 112,308.60 × 35,430.80
  4. Step 4: Simplify right side
    74,958.80x = 3,979,183,544.88
  5. Step 5: Solve for x
    x = 3,979,183,544.88/74,958.80
  6. Step 6: Final answer
    x = 53,084.94

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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.