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Finding the Fourth Proportional to 303,853.06, 455,779.79 and 79,212.93

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Solution

The fourth proportional to 303,853.06, 455,779.79 and 79,212.93 is: 118,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,853.06 : 455,779.79 = 79,212.93 : x
  2. Step 2: Convert to fraction form
    303,853.06/455,779.79 = 79,212.93/x
  3. Step 3: Cross multiply
    303,853.06x = 455,779.79 × 79,212.93
  4. Step 4: Simplify right side
    303,853.06x = 36,103,652,600.68
  5. Step 5: Solve for x
    x = 36,103,652,600.68/303,853.06
  6. Step 6: Final answer
    x = 118,819.45

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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.