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Finding the Fourth Proportional to 194,611.52, 268,563.12 and 105,187.52

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Solution

The fourth proportional to 194,611.52, 268,563.12 and 105,187.52 is: 145,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,611.52 : 268,563.12 = 105,187.52 : x
  2. Step 2: Convert to fraction form
    194,611.52/268,563.12 = 105,187.52/x
  3. Step 3: Cross multiply
    194,611.52x = 268,563.12 × 105,187.52
  4. Step 4: Simplify right side
    194,611.52x = 28,249,488,556.26
  5. Step 5: Solve for x
    x = 28,249,488,556.26/194,611.52
  6. Step 6: Final answer
    x = 145,158.36

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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.