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Finding the Fourth Proportional to 66,573.21, 91,858.86 and 37,891.17

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Solution

The fourth proportional to 66,573.21, 91,858.86 and 37,891.17 is: 52,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,573.21 : 91,858.86 = 37,891.17 : x
  2. Step 2: Convert to fraction form
    66,573.21/91,858.86 = 37,891.17/x
  3. Step 3: Cross multiply
    66,573.21x = 91,858.86 × 37,891.17
  4. Step 4: Simplify right side
    66,573.21x = 3,480,639,680.27
  5. Step 5: Solve for x
    x = 3,480,639,680.27/66,573.21
  6. Step 6: Final answer
    x = 52,282.89

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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.