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Finding the Fourth Proportional to 104,659.40, 156,989.10 and 75,353.60

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Solution

The fourth proportional to 104,659.40, 156,989.10 and 75,353.60 is: 113,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,659.40 : 156,989.10 = 75,353.60 : x
  2. Step 2: Convert to fraction form
    104,659.40/156,989.10 = 75,353.60/x
  3. Step 3: Cross multiply
    104,659.40x = 156,989.10 × 75,353.60
  4. Step 4: Simplify right side
    104,659.40x = 11,829,693,845.76
  5. Step 5: Solve for x
    x = 11,829,693,845.76/104,659.40
  6. Step 6: Final answer
    x = 113,030.40

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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.