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Finding the Fourth Proportional to 66,486.39, 91,748.84 and 37,807.22

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Solution

The fourth proportional to 66,486.39, 91,748.84 and 37,807.22 is: 52,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.39 : 91,748.84 = 37,807.22 : x
  2. Step 2: Convert to fraction form
    66,486.39/91,748.84 = 37,807.22/x
  3. Step 3: Cross multiply
    66,486.39x = 91,748.84 × 37,807.22
  4. Step 4: Simplify right side
    66,486.39x = 3,468,767,930.84
  5. Step 5: Solve for x
    x = 3,468,767,930.84/66,486.39
  6. Step 6: Final answer
    x = 52,172.60

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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.