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Finding the Fourth Proportional to 125,192.80, 187,710.15 and 69,072.02

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Solution

The fourth proportional to 125,192.80, 187,710.15 and 69,072.02 is: 103,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,192.80 : 187,710.15 = 69,072.02 : x
  2. Step 2: Convert to fraction form
    125,192.80/187,710.15 = 69,072.02/x
  3. Step 3: Cross multiply
    125,192.80x = 187,710.15 × 69,072.02
  4. Step 4: Simplify right side
    125,192.80x = 12,965,519,235.00
  5. Step 5: Solve for x
    x = 12,965,519,235.00/125,192.80
  6. Step 6: Final answer
    x = 103,564.42

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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.