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Finding the Fourth Proportional to 92,123.68, 138,185.52 and 50,833.12

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Solution

The fourth proportional to 92,123.68, 138,185.52 and 50,833.12 is: 76,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,123.68 : 138,185.52 = 50,833.12 : x
  2. Step 2: Convert to fraction form
    92,123.68/138,185.52 = 50,833.12/x
  3. Step 3: Cross multiply
    92,123.68x = 138,185.52 × 50,833.12
  4. Step 4: Simplify right side
    92,123.68x = 7,024,401,120.42
  5. Step 5: Solve for x
    x = 7,024,401,120.42/92,123.68
  6. Step 6: Final answer
    x = 76,249.68

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1.5x scale

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.