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Finding the Fourth Proportional to 48,905.40, 73,358.10 and 45,600.60

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Solution

The fourth proportional to 48,905.40, 73,358.10 and 45,600.60 is: 68,400.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,905.40 : 73,358.10 = 45,600.60 : x
  2. Step 2: Convert to fraction form
    48,905.40/73,358.10 = 45,600.60/x
  3. Step 3: Cross multiply
    48,905.40x = 73,358.10 × 45,600.60
  4. Step 4: Simplify right side
    48,905.40x = 3,345,173,374.86
  5. Step 5: Solve for x
    x = 3,345,173,374.86/48,905.40
  6. Step 6: Final answer
    x = 68,400.90

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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.