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Finding the Fourth Proportional to 171,513.76, 236,706.50 and 98,919.48

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Solution

The fourth proportional to 171,513.76, 236,706.50 and 98,919.48 is: 136,518.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,513.76 : 236,706.50 = 98,919.48 : x
  2. Step 2: Convert to fraction form
    171,513.76/236,706.50 = 98,919.48/x
  3. Step 3: Cross multiply
    171,513.76x = 236,706.50 × 98,919.48
  4. Step 4: Simplify right side
    171,513.76x = 23,414,883,892.62
  5. Step 5: Solve for x
    x = 23,414,883,892.62/171,513.76
  6. Step 6: Final answer
    x = 136,518.98

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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.