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Finding the Fourth Proportional to 92,521.82, 138,838.10 and 84,993.08

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Solution

The fourth proportional to 92,521.82, 138,838.10 and 84,993.08 is: 127,540.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,521.82 : 138,838.10 = 84,993.08 : x
  2. Step 2: Convert to fraction form
    92,521.82/138,838.10 = 84,993.08/x
  3. Step 3: Cross multiply
    92,521.82x = 138,838.10 × 84,993.08
  4. Step 4: Simplify right side
    92,521.82x = 11,800,276,621.19
  5. Step 5: Solve for x
    x = 11,800,276,621.19/92,521.82
  6. Step 6: Final answer
    x = 127,540.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.