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Finding the Fourth Proportional to 128,653.94, 192,926.22 and 52,700.12

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Solution

The fourth proportional to 128,653.94, 192,926.22 and 52,700.12 is: 79,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,653.94 : 192,926.22 = 52,700.12 : x
  2. Step 2: Convert to fraction form
    128,653.94/192,926.22 = 52,700.12/x
  3. Step 3: Cross multiply
    128,653.94x = 192,926.22 × 52,700.12
  4. Step 4: Simplify right side
    128,653.94x = 10,167,234,945.15
  5. Step 5: Solve for x
    x = 10,167,234,945.15/128,653.94
  6. Step 6: Final answer
    x = 79,027.78

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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.