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Finding the Fourth Proportional to 120,856.80, 181,284.75 and 29,672.58

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Solution

The fourth proportional to 120,856.80, 181,284.75 and 29,672.58 is: 44,508.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,856.80 : 181,284.75 = 29,672.58 : x
  2. Step 2: Convert to fraction form
    120,856.80/181,284.75 = 29,672.58/x
  3. Step 3: Cross multiply
    120,856.80x = 181,284.75 × 29,672.58
  4. Step 4: Simplify right side
    120,856.80x = 5,379,186,247.16
  5. Step 5: Solve for x
    x = 5,379,186,247.16/120,856.80
  6. Step 6: Final answer
    x = 44,508.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.