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Finding the Fourth Proportional to 66,609.19, 91,927.04 and 36,399.12

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Solution

The fourth proportional to 66,609.19, 91,927.04 and 36,399.12 is: 50,234.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609.19 : 91,927.04 = 36,399.12 : x
  2. Step 2: Convert to fraction form
    66,609.19/91,927.04 = 36,399.12/x
  3. Step 3: Cross multiply
    66,609.19x = 91,927.04 × 36,399.12
  4. Step 4: Simplify right side
    66,609.19x = 3,346,063,360.20
  5. Step 5: Solve for x
    x = 3,346,063,360.20/66,609.19
  6. Step 6: Final answer
    x = 50,234.26

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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.