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Finding the Fourth Proportional to 111,696.84, 154,175.40 and 66,382.20

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Solution

The fourth proportional to 111,696.84, 154,175.40 and 66,382.20 is: 91,627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,696.84 : 154,175.40 = 66,382.20 : x
  2. Step 2: Convert to fraction form
    111,696.84/154,175.40 = 66,382.20/x
  3. Step 3: Cross multiply
    111,696.84x = 154,175.40 × 66,382.20
  4. Step 4: Simplify right side
    111,696.84x = 10,234,502,237.88
  5. Step 5: Solve for x
    x = 10,234,502,237.88/111,696.84
  6. Step 6: Final answer
    x = 91,627.50

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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.