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Finding the Fourth Proportional to 66,074.06, 91,257.89 and 43,513.89

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Solution

The fourth proportional to 66,074.06, 91,257.89 and 43,513.89 is: 60,099.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,074.06 : 91,257.89 = 43,513.89 : x
  2. Step 2: Convert to fraction form
    66,074.06/91,257.89 = 43,513.89/x
  3. Step 3: Cross multiply
    66,074.06x = 91,257.89 × 43,513.89
  4. Step 4: Simplify right side
    66,074.06x = 3,970,985,985.40
  5. Step 5: Solve for x
    x = 3,970,985,985.40/66,074.06
  6. Step 6: Final answer
    x = 60,099.01

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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.