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Finding the Fourth Proportional to 74,928.80, 112,522.80 and 48,749.60

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Solution

The fourth proportional to 74,928.80, 112,522.80 and 48,749.60 is: 73,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,928.80 : 112,522.80 = 48,749.60 : x
  2. Step 2: Convert to fraction form
    74,928.80/112,522.80 = 48,749.60/x
  3. Step 3: Cross multiply
    74,928.80x = 112,522.80 × 48,749.60
  4. Step 4: Simplify right side
    74,928.80x = 5,485,441,490.88
  5. Step 5: Solve for x
    x = 5,485,441,490.88/74,928.80
  6. Step 6: Final answer
    x = 73,208.72

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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.