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Finding the Fourth Proportional to 92,942.64, 139,364.55 and 36,780.48

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Solution

The fourth proportional to 92,942.64, 139,364.55 and 36,780.48 is: 55,151.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,942.64 : 139,364.55 = 36,780.48 : x
  2. Step 2: Convert to fraction form
    92,942.64/139,364.55 = 36,780.48/x
  3. Step 3: Cross multiply
    92,942.64x = 139,364.55 × 36,780.48
  4. Step 4: Simplify right side
    92,942.64x = 5,125,895,043.98
  5. Step 5: Solve for x
    x = 5,125,895,043.98/92,942.64
  6. Step 6: Final answer
    x = 55,151.17

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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.