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Finding the Fourth Proportional to 132,992.64, 183,363.84 and 85,167.36

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Solution

The fourth proportional to 132,992.64, 183,363.84 and 85,167.36 is: 117,424.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,992.64 : 183,363.84 = 85,167.36 : x
  2. Step 2: Convert to fraction form
    132,992.64/183,363.84 = 85,167.36/x
  3. Step 3: Cross multiply
    132,992.64x = 183,363.84 × 85,167.36
  4. Step 4: Simplify right side
    132,992.64x = 15,616,614,172.26
  5. Step 5: Solve for x
    x = 15,616,614,172.26/132,992.64
  6. Step 6: Final answer
    x = 117,424.65

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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.