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Finding the Fourth Proportional to 104,419.40, 156,629.10 and 48,259.40

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Solution

The fourth proportional to 104,419.40, 156,629.10 and 48,259.40 is: 72,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,419.40 : 156,629.10 = 48,259.40 : x
  2. Step 2: Convert to fraction form
    104,419.40/156,629.10 = 48,259.40/x
  3. Step 3: Cross multiply
    104,419.40x = 156,629.10 × 48,259.40
  4. Step 4: Simplify right side
    104,419.40x = 7,558,826,388.54
  5. Step 5: Solve for x
    x = 7,558,826,388.54/104,419.40
  6. Step 6: Final answer
    x = 72,389.10

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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.