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Finding the Fourth Proportional to 125,046.08, 187,268.80 and 71,576

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Solution

The fourth proportional to 125,046.08, 187,268.80 and 71,576 is: 107,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,046.08 : 187,268.80 = 71,576 : x
  2. Step 2: Convert to fraction form
    125,046.08/187,268.80 = 71,576/x
  3. Step 3: Cross multiply
    125,046.08x = 187,268.80 × 71,576
  4. Step 4: Simplify right side
    125,046.08x = 13,403,951,628.80
  5. Step 5: Solve for x
    x = 13,403,951,628.80/125,046.08
  6. Step 6: Final answer
    x = 107,192.10

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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.