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Finding the Fourth Proportional to 92,683.76, 139,060.44 and 42,787.76

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Solution

The fourth proportional to 92,683.76, 139,060.44 and 42,787.76 is: 64,197.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,683.76 : 139,060.44 = 42,787.76 : x
  2. Step 2: Convert to fraction form
    92,683.76/139,060.44 = 42,787.76/x
  3. Step 3: Cross multiply
    92,683.76x = 139,060.44 × 42,787.76
  4. Step 4: Simplify right side
    92,683.76x = 5,950,084,732.21
  5. Step 5: Solve for x
    x = 5,950,084,732.21/92,683.76
  6. Step 6: Final answer
    x = 64,197.71

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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.