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Finding the Fourth Proportional to 108,564.60, 149,860.62 and 105,568.32

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Solution

The fourth proportional to 108,564.60, 149,860.62 and 105,568.32 is: 145,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,564.60 : 149,860.62 = 105,568.32 : x
  2. Step 2: Convert to fraction form
    108,564.60/149,860.62 = 105,568.32/x
  3. Step 3: Cross multiply
    108,564.60x = 149,860.62 × 105,568.32
  4. Step 4: Simplify right side
    108,564.60x = 15,820,533,887.56
  5. Step 5: Solve for x
    x = 15,820,533,887.56/108,564.60
  6. Step 6: Final answer
    x = 145,724.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.