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Finding the Fourth Proportional to 111,281.71, 166,852.31 and 61,396.57

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Solution

The fourth proportional to 111,281.71, 166,852.31 and 61,396.57 is: 92,056.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,281.71 : 166,852.31 = 61,396.57 : x
  2. Step 2: Convert to fraction form
    111,281.71/166,852.31 = 61,396.57/x
  3. Step 3: Cross multiply
    111,281.71x = 166,852.31 × 61,396.57
  4. Step 4: Simplify right side
    111,281.71x = 10,244,159,530.58
  5. Step 5: Solve for x
    x = 10,244,159,530.58/111,281.71
  6. Step 6: Final answer
    x = 92,056.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.