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Finding the Fourth Proportional to 19,692.60, 29,530.44 and 7,208.52

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Solution

The fourth proportional to 19,692.60, 29,530.44 and 7,208.52 is: 10,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.60 : 29,530.44 = 7,208.52 : x
  2. Step 2: Convert to fraction form
    19,692.60/29,530.44 = 7,208.52/x
  3. Step 3: Cross multiply
    19,692.60x = 29,530.44 × 7,208.52
  4. Step 4: Simplify right side
    19,692.60x = 212,870,767.35
  5. Step 5: Solve for x
    x = 212,870,767.35/19,692.60
  6. Step 6: Final answer
    x = 10,809.68

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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.