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Finding the Fourth Proportional to 171,897.66, 237,233.78 and 100,300.74

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Solution

The fourth proportional to 171,897.66, 237,233.78 and 100,300.74 is: 138,423.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,897.66 : 237,233.78 = 100,300.74 : x
  2. Step 2: Convert to fraction form
    171,897.66/237,233.78 = 100,300.74/x
  3. Step 3: Cross multiply
    171,897.66x = 237,233.78 × 100,300.74
  4. Step 4: Simplify right side
    171,897.66x = 23,794,723,185.49
  5. Step 5: Solve for x
    x = 23,794,723,185.49/171,897.66
  6. Step 6: Final answer
    x = 138,423.78

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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.