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Finding the Fourth Proportional to 66,620.22, 91,975.95 and 41,503.74

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Solution

The fourth proportional to 66,620.22, 91,975.95 and 41,503.74 is: 57,300.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,620.22 : 91,975.95 = 41,503.74 : x
  2. Step 2: Convert to fraction form
    66,620.22/91,975.95 = 41,503.74/x
  3. Step 3: Cross multiply
    66,620.22x = 91,975.95 × 41,503.74
  4. Step 4: Simplify right side
    66,620.22x = 3,817,345,915.05
  5. Step 5: Solve for x
    x = 3,817,345,915.05/66,620.22
  6. Step 6: Final answer
    x = 57,300.11

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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.