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Finding the Fourth Proportional to 108,209.64, 149,318.64 and 60,461.94

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Solution

The fourth proportional to 108,209.64, 149,318.64 and 60,461.94 is: 83,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,209.64 : 149,318.64 = 60,461.94 : x
  2. Step 2: Convert to fraction form
    108,209.64/149,318.64 = 60,461.94/x
  3. Step 3: Cross multiply
    108,209.64x = 149,318.64 × 60,461.94
  4. Step 4: Simplify right side
    108,209.64x = 9,028,094,652.56
  5. Step 5: Solve for x
    x = 9,028,094,652.56/108,209.64
  6. Step 6: Final answer
    x = 83,431.52

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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.