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Finding the Fourth Proportional to 108,672.16, 149,984.40 and 60,944.80

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Solution

The fourth proportional to 108,672.16, 149,984.40 and 60,944.80 is: 84,113.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,672.16 : 149,984.40 = 60,944.80 : x
  2. Step 2: Convert to fraction form
    108,672.16/149,984.40 = 60,944.80/x
  3. Step 3: Cross multiply
    108,672.16x = 149,984.40 × 60,944.80
  4. Step 4: Simplify right side
    108,672.16x = 9,140,769,261.12
  5. Step 5: Solve for x
    x = 9,140,769,261.12/108,672.16
  6. Step 6: Final answer
    x = 84,113.26

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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.