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Finding the Fourth Proportional to 352,415.72, 528,678.66 and 115,704.56

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Solution

The fourth proportional to 352,415.72, 528,678.66 and 115,704.56 is: 173,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,415.72 : 528,678.66 = 115,704.56 : x
  2. Step 2: Convert to fraction form
    352,415.72/528,678.66 = 115,704.56/x
  3. Step 3: Cross multiply
    352,415.72x = 528,678.66 × 115,704.56
  4. Step 4: Simplify right side
    352,415.72x = 61,170,531,736.69
  5. Step 5: Solve for x
    x = 61,170,531,736.69/352,415.72
  6. Step 6: Final answer
    x = 173,574.92

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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.