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Finding the Fourth Proportional to 92,873.40, 139,214.78 and 36,690.76

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Solution

The fourth proportional to 92,873.40, 139,214.78 and 36,690.76 is: 54,998.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,873.40 : 139,214.78 = 36,690.76 : x
  2. Step 2: Convert to fraction form
    92,873.40/139,214.78 = 36,690.76/x
  3. Step 3: Cross multiply
    92,873.40x = 139,214.78 × 36,690.76
  4. Step 4: Simplify right side
    92,873.40x = 5,107,896,081.43
  5. Step 5: Solve for x
    x = 5,107,896,081.43/92,873.40
  6. Step 6: Final answer
    x = 54,998.48

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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.