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Finding the Fourth Proportional to 66,494.34, 91,760.58 and 38,199.42

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Solution

The fourth proportional to 66,494.34, 91,760.58 and 38,199.42 is: 52,714.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,494.34 : 91,760.58 = 38,199.42 : x
  2. Step 2: Convert to fraction form
    66,494.34/91,760.58 = 38,199.42/x
  3. Step 3: Cross multiply
    66,494.34x = 91,760.58 × 38,199.42
  4. Step 4: Simplify right side
    66,494.34x = 3,505,200,934.86
  5. Step 5: Solve for x
    x = 3,505,200,934.86/66,494.34
  6. Step 6: Final answer
    x = 52,714.28

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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.