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Finding the Fourth Proportional to 92,145.56, 138,216.72 and 29,816.12

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Solution

The fourth proportional to 92,145.56, 138,216.72 and 29,816.12 is: 44,723.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,145.56 : 138,216.72 = 29,816.12 : x
  2. Step 2: Convert to fraction form
    92,145.56/138,216.72 = 29,816.12/x
  3. Step 3: Cross multiply
    92,145.56x = 138,216.72 × 29,816.12
  4. Step 4: Simplify right side
    92,145.56x = 4,121,086,309.53
  5. Step 5: Solve for x
    x = 4,121,086,309.53/92,145.56
  6. Step 6: Final answer
    x = 44,723.66

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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.