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Finding the Fourth Proportional to 125,357.10, 187,858.85 and 69,222.48

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Solution

The fourth proportional to 125,357.10, 187,858.85 and 69,222.48 is: 103,736.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,357.10 : 187,858.85 = 69,222.48 : x
  2. Step 2: Convert to fraction form
    125,357.10/187,858.85 = 69,222.48/x
  3. Step 3: Cross multiply
    125,357.10x = 187,858.85 × 69,222.48
  4. Step 4: Simplify right side
    125,357.10x = 13,004,055,486.95
  5. Step 5: Solve for x
    x = 13,004,055,486.95/125,357.10
  6. Step 6: Final answer
    x = 103,736.09

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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.