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Finding the Fourth Proportional to 101,785.46, 140,442.90 and 58,764.21

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Solution

The fourth proportional to 101,785.46, 140,442.90 and 58,764.21 is: 81,082.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,785.46 : 140,442.90 = 58,764.21 : x
  2. Step 2: Convert to fraction form
    101,785.46/140,442.90 = 58,764.21/x
  3. Step 3: Cross multiply
    101,785.46x = 140,442.90 × 58,764.21
  4. Step 4: Simplify right side
    101,785.46x = 8,253,015,652.13
  5. Step 5: Solve for x
    x = 8,253,015,652.13/101,785.46
  6. Step 6: Final answer
    x = 81,082.46

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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.