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Finding the Fourth Proportional to 66,416.20, 99,672.90 and 44,222.20

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Solution

The fourth proportional to 66,416.20, 99,672.90 and 44,222.20 is: 66,365.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,416.20 : 99,672.90 = 44,222.20 : x
  2. Step 2: Convert to fraction form
    66,416.20/99,672.90 = 44,222.20/x
  3. Step 3: Cross multiply
    66,416.20x = 99,672.90 × 44,222.20
  4. Step 4: Simplify right side
    66,416.20x = 4,407,754,918.38
  5. Step 5: Solve for x
    x = 4,407,754,918.38/66,416.20
  6. Step 6: Final answer
    x = 66,365.66

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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.