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Finding the Fourth Proportional to 342,685.07, 514,082.69 and 117,990.26

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Solution

The fourth proportional to 342,685.07, 514,082.69 and 117,990.26 is: 177,004.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,685.07 : 514,082.69 = 117,990.26 : x
  2. Step 2: Convert to fraction form
    342,685.07/514,082.69 = 117,990.26/x
  3. Step 3: Cross multiply
    342,685.07x = 514,082.69 × 117,990.26
  4. Step 4: Simplify right side
    342,685.07x = 60,656,751,392.32
  5. Step 5: Solve for x
    x = 60,656,751,392.32/342,685.07
  6. Step 6: Final answer
    x = 177,004.36

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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.