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Finding the Fourth Proportional to 74,465.60, 111,928.80 and 73,083.20

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Solution

The fourth proportional to 74,465.60, 111,928.80 and 73,083.20 is: 109,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,465.60 : 111,928.80 = 73,083.20 : x
  2. Step 2: Convert to fraction form
    74,465.60/111,928.80 = 73,083.20/x
  3. Step 3: Cross multiply
    74,465.60x = 111,928.80 × 73,083.20
  4. Step 4: Simplify right side
    74,465.60x = 8,180,114,876.16
  5. Step 5: Solve for x
    x = 8,180,114,876.16/74,465.60
  6. Step 6: Final answer
    x = 109,850.92

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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.