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Finding the Fourth Proportional to 35,078.67, 48,393.15 and 20,923.31

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Solution

The fourth proportional to 35,078.67, 48,393.15 and 20,923.31 is: 28,864.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,078.67 : 48,393.15 = 20,923.31 : x
  2. Step 2: Convert to fraction form
    35,078.67/48,393.15 = 20,923.31/x
  3. Step 3: Cross multiply
    35,078.67x = 48,393.15 × 20,923.31
  4. Step 4: Simplify right side
    35,078.67x = 1,012,544,921.85
  5. Step 5: Solve for x
    x = 1,012,544,921.85/35,078.67
  6. Step 6: Final answer
    x = 28,864.97

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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.