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Finding the Fourth Proportional to 92,136.59, 138,196.92 and 56,103.74

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Solution

The fourth proportional to 92,136.59, 138,196.92 and 56,103.74 is: 84,150.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,136.59 : 138,196.92 = 56,103.74 : x
  2. Step 2: Convert to fraction form
    92,136.59/138,196.92 = 56,103.74/x
  3. Step 3: Cross multiply
    92,136.59x = 138,196.92 × 56,103.74
  4. Step 4: Simplify right side
    92,136.59x = 7,753,364,068.48
  5. Step 5: Solve for x
    x = 7,753,364,068.48/92,136.59
  6. Step 6: Final answer
    x = 84,150.76

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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.