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Finding the Fourth Proportional to 395,029.11, 545,211.14 and 222,999.51

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Solution

The fourth proportional to 395,029.11, 545,211.14 and 222,999.51 is: 307,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,029.11 : 545,211.14 = 222,999.51 : x
  2. Step 2: Convert to fraction form
    395,029.11/545,211.14 = 222,999.51/x
  3. Step 3: Cross multiply
    395,029.11x = 545,211.14 × 222,999.51
  4. Step 4: Simplify right side
    395,029.11x = 121,581,815,951.54
  5. Step 5: Solve for x
    x = 121,581,815,951.54/395,029.11
  6. Step 6: Final answer
    x = 307,779.38

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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.