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Finding the Fourth Proportional to 386,074.68, 578,323.62 and 198,692.52

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Solution

The fourth proportional to 386,074.68, 578,323.62 and 198,692.52 is: 297,633.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,074.68 : 578,323.62 = 198,692.52 : x
  2. Step 2: Convert to fraction form
    386,074.68/578,323.62 = 198,692.52/x
  3. Step 3: Cross multiply
    386,074.68x = 578,323.62 × 198,692.52
  4. Step 4: Simplify right side
    386,074.68x = 114,908,577,433.32
  5. Step 5: Solve for x
    x = 114,908,577,433.32/386,074.68
  6. Step 6: Final answer
    x = 297,633.03

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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.