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Finding the Fourth Proportional to 80,993.88, 111,768.30 and 47,000.58

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Solution

The fourth proportional to 80,993.88, 111,768.30 and 47,000.58 is: 64,858.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,993.88 : 111,768.30 = 47,000.58 : x
  2. Step 2: Convert to fraction form
    80,993.88/111,768.30 = 47,000.58/x
  3. Step 3: Cross multiply
    80,993.88x = 111,768.30 × 47,000.58
  4. Step 4: Simplify right side
    80,993.88x = 5,253,174,925.61
  5. Step 5: Solve for x
    x = 5,253,174,925.61/80,993.88
  6. Step 6: Final answer
    x = 64,858.91

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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.