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Finding the Fourth Proportional to 66,412.60, 91,649.45 and 36,197.94

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Solution

The fourth proportional to 66,412.60, 91,649.45 and 36,197.94 is: 49,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,412.60 : 91,649.45 = 36,197.94 : x
  2. Step 2: Convert to fraction form
    66,412.60/91,649.45 = 36,197.94/x
  3. Step 3: Cross multiply
    66,412.60x = 91,649.45 × 36,197.94
  4. Step 4: Simplify right side
    66,412.60x = 3,317,521,611.75
  5. Step 5: Solve for x
    x = 3,317,521,611.75/66,412.60
  6. Step 6: Final answer
    x = 49,953.20

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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.