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Finding the Fourth Proportional to 35,478.72, 48,960.96 and 19,562.76

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Solution

The fourth proportional to 35,478.72, 48,960.96 and 19,562.76 is: 26,996.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,478.72 : 48,960.96 = 19,562.76 : x
  2. Step 2: Convert to fraction form
    35,478.72/48,960.96 = 19,562.76/x
  3. Step 3: Cross multiply
    35,478.72x = 48,960.96 × 19,562.76
  4. Step 4: Simplify right side
    35,478.72x = 957,811,509.85
  5. Step 5: Solve for x
    x = 957,811,509.85/35,478.72
  6. Step 6: Final answer
    x = 26,996.79

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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.