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Finding the Fourth Proportional to 188,575.59, 260,238.78 and 103,692.59

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Solution

The fourth proportional to 188,575.59, 260,238.78 and 103,692.59 is: 143,098.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,575.59 : 260,238.78 = 103,692.59 : x
  2. Step 2: Convert to fraction form
    188,575.59/260,238.78 = 103,692.59/x
  3. Step 3: Cross multiply
    188,575.59x = 260,238.78 × 103,692.59
  4. Step 4: Simplify right side
    188,575.59x = 26,984,831,815.45
  5. Step 5: Solve for x
    x = 26,984,831,815.45/188,575.59
  6. Step 6: Final answer
    x = 143,098.22

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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.