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Finding the Fourth Proportional to 92,451.86, 138,681.24 and 25,890.26

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Solution

The fourth proportional to 92,451.86, 138,681.24 and 25,890.26 is: 38,836.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,451.86 : 138,681.24 = 25,890.26 : x
  2. Step 2: Convert to fraction form
    92,451.86/138,681.24 = 25,890.26/x
  3. Step 3: Cross multiply
    92,451.86x = 138,681.24 × 25,890.26
  4. Step 4: Simplify right side
    92,451.86x = 3,590,493,360.72
  5. Step 5: Solve for x
    x = 3,590,493,360.72/92,451.86
  6. Step 6: Final answer
    x = 38,836.36

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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.