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Finding the Fourth Proportional to 108,205.65, 149,322.95 and 60,458.49

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Solution

The fourth proportional to 108,205.65, 149,322.95 and 60,458.49 is: 83,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,205.65 : 149,322.95 = 60,458.49 : x
  2. Step 2: Convert to fraction form
    108,205.65/149,322.95 = 60,458.49/x
  3. Step 3: Cross multiply
    108,205.65x = 149,322.95 × 60,458.49
  4. Step 4: Simplify right side
    108,205.65x = 9,027,839,777.05
  5. Step 5: Solve for x
    x = 9,027,839,777.05/108,205.65
  6. Step 6: Final answer
    x = 83,432.24

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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.