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Finding the Fourth Proportional to 92,740, 139,136.88 and 27,076

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Solution

The fourth proportional to 92,740, 139,136.88 and 27,076 is: 40,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,740 : 139,136.88 = 27,076 : x
  2. Step 2: Convert to fraction form
    92,740/139,136.88 = 27,076/x
  3. Step 3: Cross multiply
    92,740x = 139,136.88 × 27,076
  4. Step 4: Simplify right side
    92,740x = 3,767,270,162.88
  5. Step 5: Solve for x
    x = 3,767,270,162.88/92,740
  6. Step 6: Final answer
    x = 40,621.85

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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.