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Finding the Fourth Proportional to 92,495.84, 138,728.11 and 25,920.65

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Solution

The fourth proportional to 92,495.84, 138,728.11 and 25,920.65 is: 38,876.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,495.84 : 138,728.11 = 25,920.65 : x
  2. Step 2: Convert to fraction form
    92,495.84/138,728.11 = 25,920.65/x
  3. Step 3: Cross multiply
    92,495.84x = 138,728.11 × 25,920.65
  4. Step 4: Simplify right side
    92,495.84x = 3,595,922,026.03
  5. Step 5: Solve for x
    x = 3,595,922,026.03/92,495.84
  6. Step 6: Final answer
    x = 38,876.58

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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.