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Finding the Fourth Proportional to 66,993.84, 92,453.76 and 45,219.60

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Solution

The fourth proportional to 66,993.84, 92,453.76 and 45,219.60 is: 62,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,993.84 : 92,453.76 = 45,219.60 : x
  2. Step 2: Convert to fraction form
    66,993.84/92,453.76 = 45,219.60/x
  3. Step 3: Cross multiply
    66,993.84x = 92,453.76 × 45,219.60
  4. Step 4: Simplify right side
    66,993.84x = 4,180,722,045.70
  5. Step 5: Solve for x
    x = 4,180,722,045.70/66,993.84
  6. Step 6: Final answer
    x = 62,404.57

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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.