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Finding the Fourth Proportional to 72,381.45, 108,585.84 and 27,416.28

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Solution

The fourth proportional to 72,381.45, 108,585.84 and 27,416.28 is: 41,129.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,381.45 : 108,585.84 = 27,416.28 : x
  2. Step 2: Convert to fraction form
    72,381.45/108,585.84 = 27,416.28/x
  3. Step 3: Cross multiply
    72,381.45x = 108,585.84 × 27,416.28
  4. Step 4: Simplify right side
    72,381.45x = 2,977,019,692.69
  5. Step 5: Solve for x
    x = 2,977,019,692.69/72,381.45
  6. Step 6: Final answer
    x = 41,129.59

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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.