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Finding the Fourth Proportional to 104,486.60, 156,729.90 and 30,614.60

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Solution

The fourth proportional to 104,486.60, 156,729.90 and 30,614.60 is: 45,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,486.60 : 156,729.90 = 30,614.60 : x
  2. Step 2: Convert to fraction form
    104,486.60/156,729.90 = 30,614.60/x
  3. Step 3: Cross multiply
    104,486.60x = 156,729.90 × 30,614.60
  4. Step 4: Simplify right side
    104,486.60x = 4,798,223,196.54
  5. Step 5: Solve for x
    x = 4,798,223,196.54/104,486.60
  6. Step 6: Final answer
    x = 45,921.90

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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.