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Finding the Fourth Proportional to 155,772.24, 214,965.44 and 88,704.24

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Solution

The fourth proportional to 155,772.24, 214,965.44 and 88,704.24 is: 122,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,772.24 : 214,965.44 = 88,704.24 : x
  2. Step 2: Convert to fraction form
    155,772.24/214,965.44 = 88,704.24/x
  3. Step 3: Cross multiply
    155,772.24x = 214,965.44 × 88,704.24
  4. Step 4: Simplify right side
    155,772.24x = 19,068,345,981.47
  5. Step 5: Solve for x
    x = 19,068,345,981.47/155,772.24
  6. Step 6: Final answer
    x = 122,411.71

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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.