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Finding the Fourth Proportional to 173,390, 239,278.20 and 93,902

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Solution

The fourth proportional to 173,390, 239,278.20 and 93,902 is: 129,584.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,390 : 239,278.20 = 93,902 : x
  2. Step 2: Convert to fraction form
    173,390/239,278.20 = 93,902/x
  3. Step 3: Cross multiply
    173,390x = 239,278.20 × 93,902
  4. Step 4: Simplify right side
    173,390x = 22,468,701,536.40
  5. Step 5: Solve for x
    x = 22,468,701,536.40/173,390
  6. Step 6: Final answer
    x = 129,584.76

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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.