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Finding the Fourth Proportional to 104,436.80, 156,741.60 and 48,363.20

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Solution

The fourth proportional to 104,436.80, 156,741.60 and 48,363.20 is: 72,584.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,436.80 : 156,741.60 = 48,363.20 : x
  2. Step 2: Convert to fraction form
    104,436.80/156,741.60 = 48,363.20/x
  3. Step 3: Cross multiply
    104,436.80x = 156,741.60 × 48,363.20
  4. Step 4: Simplify right side
    104,436.80x = 7,580,525,349.12
  5. Step 5: Solve for x
    x = 7,580,525,349.12/104,436.80
  6. Step 6: Final answer
    x = 72,584.81

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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.