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Finding the Fourth Proportional to 92,992.86, 139,468.30 and 26,431.52

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Solution

The fourth proportional to 92,992.86, 139,468.30 and 26,431.52 is: 39,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.86 : 139,468.30 = 26,431.52 : x
  2. Step 2: Convert to fraction form
    92,992.86/139,468.30 = 26,431.52/x
  3. Step 3: Cross multiply
    92,992.86x = 139,468.30 × 26,431.52
  4. Step 4: Simplify right side
    92,992.86x = 3,686,358,397.40
  5. Step 5: Solve for x
    x = 3,686,358,397.40/92,992.86
  6. Step 6: Final answer
    x = 39,641.31

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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.