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Finding the Fourth Proportional to 316,076.92, 474,115.82 and 129,088.42

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Solution

The fourth proportional to 316,076.92, 474,115.82 and 129,088.42 is: 193,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,076.92 : 474,115.82 = 129,088.42 : x
  2. Step 2: Convert to fraction form
    316,076.92/474,115.82 = 129,088.42/x
  3. Step 3: Cross multiply
    316,076.92x = 474,115.82 × 129,088.42
  4. Step 4: Simplify right side
    316,076.92x = 61,202,860,270.07
  5. Step 5: Solve for x
    x = 61,202,860,270.07/316,076.92
  6. Step 6: Final answer
    x = 193,632.81

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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.