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Finding the Fourth Proportional to 108,609.33, 149,878.44 and 63,284.49

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Solution

The fourth proportional to 108,609.33, 149,878.44 and 63,284.49 is: 87,331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,609.33 : 149,878.44 = 63,284.49 : x
  2. Step 2: Convert to fraction form
    108,609.33/149,878.44 = 63,284.49/x
  3. Step 3: Cross multiply
    108,609.33x = 149,878.44 × 63,284.49
  4. Step 4: Simplify right side
    108,609.33x = 9,484,980,637.40
  5. Step 5: Solve for x
    x = 9,484,980,637.40/108,609.33
  6. Step 6: Final answer
    x = 87,331.18

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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.