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Finding the Fourth Proportional to 92,894.47, 139,298.56 and 45,511.90

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Solution

The fourth proportional to 92,894.47, 139,298.56 and 45,511.90 is: 68,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,894.47 : 139,298.56 = 45,511.90 : x
  2. Step 2: Convert to fraction form
    92,894.47/139,298.56 = 45,511.90/x
  3. Step 3: Cross multiply
    92,894.47x = 139,298.56 × 45,511.90
  4. Step 4: Simplify right side
    92,894.47x = 6,339,741,670.84
  5. Step 5: Solve for x
    x = 6,339,741,670.84/92,894.47
  6. Step 6: Final answer
    x = 68,246.71

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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.