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Finding the Fourth Proportional to 173,187.54, 239,003.51 and 105,188.92

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Solution

The fourth proportional to 173,187.54, 239,003.51 and 105,188.92 is: 145,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,187.54 : 239,003.51 = 105,188.92 : x
  2. Step 2: Convert to fraction form
    173,187.54/239,003.51 = 105,188.92/x
  3. Step 3: Cross multiply
    173,187.54x = 239,003.51 × 105,188.92
  4. Step 4: Simplify right side
    173,187.54x = 25,140,519,969.66
  5. Step 5: Solve for x
    x = 25,140,519,969.66/173,187.54
  6. Step 6: Final answer
    x = 145,163.56

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1.5x scale

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.