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Finding the Fourth Proportional to 126,618.78, 174,723.03 and 70,015.98

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Solution

The fourth proportional to 126,618.78, 174,723.03 and 70,015.98 is: 96,616.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,618.78 : 174,723.03 = 70,015.98 : x
  2. Step 2: Convert to fraction form
    126,618.78/174,723.03 = 70,015.98/x
  3. Step 3: Cross multiply
    126,618.78x = 174,723.03 × 70,015.98
  4. Step 4: Simplify right side
    126,618.78x = 12,233,404,174.02
  5. Step 5: Solve for x
    x = 12,233,404,174.02/126,618.78
  6. Step 6: Final answer
    x = 96,616.03

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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.