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Finding the Fourth Proportional to 493,992.39, 681,692.04 and 279,127.84

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Solution

The fourth proportional to 493,992.39, 681,692.04 and 279,127.84 is: 385,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,992.39 : 681,692.04 = 279,127.84 : x
  2. Step 2: Convert to fraction form
    493,992.39/681,692.04 = 279,127.84/x
  3. Step 3: Cross multiply
    493,992.39x = 681,692.04 × 279,127.84
  4. Step 4: Simplify right side
    493,992.39x = 190,279,226,670.39
  5. Step 5: Solve for x
    x = 190,279,226,670.39/493,992.39
  6. Step 6: Final answer
    x = 385,186.55

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1.5x scale

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.