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Finding the Fourth Proportional to 818,192, 1,129,103.76 and 455,647.60

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Solution

The fourth proportional to 818,192, 1,129,103.76 and 455,647.60 is: 628,793.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,192 : 1,129,103.76 = 455,647.60 : x
  2. Step 2: Convert to fraction form
    818,192/1,129,103.76 = 455,647.60/x
  3. Step 3: Cross multiply
    818,192x = 1,129,103.76 × 455,647.60
  4. Step 4: Simplify right side
    818,192x = 514,473,418,394.98
  5. Step 5: Solve for x
    x = 514,473,418,394.98/818,192
  6. Step 6: Final answer
    x = 628,793.02

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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.