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Finding the Fourth Proportional to 172,913.76, 238,620.56 and 96,432.93

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Solution

The fourth proportional to 172,913.76, 238,620.56 and 96,432.93 is: 133,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,913.76 : 238,620.56 = 96,432.93 : x
  2. Step 2: Convert to fraction form
    172,913.76/238,620.56 = 96,432.93/x
  3. Step 3: Cross multiply
    172,913.76x = 238,620.56 × 96,432.93
  4. Step 4: Simplify right side
    172,913.76x = 23,010,879,276.88
  5. Step 5: Solve for x
    x = 23,010,879,276.88/172,913.76
  6. Step 6: Final answer
    x = 133,077.20

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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.