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Finding the Fourth Proportional to 34,793.12, 48,020.64 and 20,653.76

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Solution

The fourth proportional to 34,793.12, 48,020.64 and 20,653.76 is: 28,505.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,793.12 : 48,020.64 = 20,653.76 : x
  2. Step 2: Convert to fraction form
    34,793.12/48,020.64 = 20,653.76/x
  3. Step 3: Cross multiply
    34,793.12x = 48,020.64 × 20,653.76
  4. Step 4: Simplify right side
    34,793.12x = 991,806,773.61
  5. Step 5: Solve for x
    x = 991,806,773.61/34,793.12
  6. Step 6: Final answer
    x = 28,505.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.