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Finding the Fourth Proportional to 268,620.19, 402,791.62 and 79,055.96

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Solution

The fourth proportional to 268,620.19, 402,791.62 and 79,055.96 is: 118,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,620.19 : 402,791.62 = 79,055.96 : x
  2. Step 2: Convert to fraction form
    268,620.19/402,791.62 = 79,055.96/x
  3. Step 3: Cross multiply
    268,620.19x = 402,791.62 × 79,055.96
  4. Step 4: Simplify right side
    268,620.19x = 31,843,078,199.06
  5. Step 5: Solve for x
    x = 31,843,078,199.06/268,620.19
  6. Step 6: Final answer
    x = 118,543.13

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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.