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Finding the Fourth Proportional to 283,994.01, 391,905.41 and 156,669.57

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Solution

The fourth proportional to 283,994.01, 391,905.41 and 156,669.57 is: 216,200.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,994.01 : 391,905.41 = 156,669.57 : x
  2. Step 2: Convert to fraction form
    283,994.01/391,905.41 = 156,669.57/x
  3. Step 3: Cross multiply
    283,994.01x = 391,905.41 × 156,669.57
  4. Step 4: Simplify right side
    283,994.01x = 61,399,651,282.03
  5. Step 5: Solve for x
    x = 61,399,651,282.03/283,994.01
  6. Step 6: Final answer
    x = 216,200.52

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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.