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Finding the Fourth Proportional to 283,878.44, 391,770.18 and 156,554.28

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Solution

The fourth proportional to 283,878.44, 391,770.18 and 156,554.28 is: 216,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,878.44 : 391,770.18 = 156,554.28 : x
  2. Step 2: Convert to fraction form
    283,878.44/391,770.18 = 156,554.28/x
  3. Step 3: Cross multiply
    283,878.44x = 391,770.18 × 156,554.28
  4. Step 4: Simplify right side
    283,878.44x = 61,333,298,455.37
  5. Step 5: Solve for x
    x = 61,333,298,455.37/283,878.44
  6. Step 6: Final answer
    x = 216,054.80

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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.