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Finding the Fourth Proportional to 104,493.40, 156,740.10 and 75,187.60

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Solution

The fourth proportional to 104,493.40, 156,740.10 and 75,187.60 is: 112,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,493.40 : 156,740.10 = 75,187.60 : x
  2. Step 2: Convert to fraction form
    104,493.40/156,740.10 = 75,187.60/x
  3. Step 3: Cross multiply
    104,493.40x = 156,740.10 × 75,187.60
  4. Step 4: Simplify right side
    104,493.40x = 11,784,911,942.76
  5. Step 5: Solve for x
    x = 11,784,911,942.76/104,493.40
  6. Step 6: Final answer
    x = 112,781.40

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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.