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Finding the Fourth Proportional to 66,630.90, 91,950.43 and 36,416.22

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Solution

The fourth proportional to 66,630.90, 91,950.43 and 36,416.22 is: 50,254.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,630.90 : 91,950.43 = 36,416.22 : x
  2. Step 2: Convert to fraction form
    66,630.90/91,950.43 = 36,416.22/x
  3. Step 3: Cross multiply
    66,630.90x = 91,950.43 × 36,416.22
  4. Step 4: Simplify right side
    66,630.90x = 3,348,487,087.97
  5. Step 5: Solve for x
    x = 3,348,487,087.97/66,630.90
  6. Step 6: Final answer
    x = 50,254.27

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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.