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Finding the Fourth Proportional to 104,673.60, 156,837.60 and 89,121.60

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Solution

The fourth proportional to 104,673.60, 156,837.60 and 89,121.60 is: 133,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,673.60 : 156,837.60 = 89,121.60 : x
  2. Step 2: Convert to fraction form
    104,673.60/156,837.60 = 89,121.60/x
  3. Step 3: Cross multiply
    104,673.60x = 156,837.60 × 89,121.60
  4. Step 4: Simplify right side
    104,673.60x = 13,977,617,852.16
  5. Step 5: Solve for x
    x = 13,977,617,852.16/104,673.60
  6. Step 6: Final answer
    x = 133,535.27

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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.