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Finding the Fourth Proportional to 66,505.93, 91,777.76 and 36,290.63

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Solution

The fourth proportional to 66,505.93, 91,777.76 and 36,290.63 is: 50,080.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.93 : 91,777.76 = 36,290.63 : x
  2. Step 2: Convert to fraction form
    66,505.93/91,777.76 = 36,290.63/x
  3. Step 3: Cross multiply
    66,505.93x = 91,777.76 × 36,290.63
  4. Step 4: Simplify right side
    66,505.93x = 3,330,672,914.47
  5. Step 5: Solve for x
    x = 3,330,672,914.47/66,505.93
  6. Step 6: Final answer
    x = 50,080.84

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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.