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Finding the Fourth Proportional to 73,270.40, 109,905.60 and 61,865.60

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Solution

The fourth proportional to 73,270.40, 109,905.60 and 61,865.60 is: 92,798.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,270.40 : 109,905.60 = 61,865.60 : x
  2. Step 2: Convert to fraction form
    73,270.40/109,905.60 = 61,865.60/x
  3. Step 3: Cross multiply
    73,270.40x = 109,905.60 × 61,865.60
  4. Step 4: Simplify right side
    73,270.40x = 6,799,375,887.36
  5. Step 5: Solve for x
    x = 6,799,375,887.36/73,270.40
  6. Step 6: Final answer
    x = 92,798.40

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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.