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Finding the Fourth Proportional to 187,989.92, 259,471.32 and 127,661.12

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Solution

The fourth proportional to 187,989.92, 259,471.32 and 127,661.12 is: 176,203.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,989.92 : 259,471.32 = 127,661.12 : x
  2. Step 2: Convert to fraction form
    187,989.92/259,471.32 = 127,661.12/x
  3. Step 3: Cross multiply
    187,989.92x = 259,471.32 × 127,661.12
  4. Step 4: Simplify right side
    187,989.92x = 33,124,399,319.08
  5. Step 5: Solve for x
    x = 33,124,399,319.08/187,989.92
  6. Step 6: Final answer
    x = 176,203.06

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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.