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Finding the Fourth Proportional to 108,662.76, 149,955.12 and 63,372.16

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Solution

The fourth proportional to 108,662.76, 149,955.12 and 63,372.16 is: 87,453.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,662.76 : 149,955.12 = 63,372.16 : x
  2. Step 2: Convert to fraction form
    108,662.76/149,955.12 = 63,372.16/x
  3. Step 3: Cross multiply
    108,662.76x = 149,955.12 × 63,372.16
  4. Step 4: Simplify right side
    108,662.76x = 9,502,979,857.46
  5. Step 5: Solve for x
    x = 9,502,979,857.46/108,662.76
  6. Step 6: Final answer
    x = 87,453.88

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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.