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Finding the Fourth Proportional to 173,391.92, 239,214.92 and 128,178.46

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Solution

The fourth proportional to 173,391.92, 239,214.92 and 128,178.46 is: 176,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,391.92 : 239,214.92 = 128,178.46 : x
  2. Step 2: Convert to fraction form
    173,391.92/239,214.92 = 128,178.46/x
  3. Step 3: Cross multiply
    173,391.92x = 239,214.92 × 128,178.46
  4. Step 4: Simplify right side
    173,391.92x = 30,662,200,054.62
  5. Step 5: Solve for x
    x = 30,662,200,054.62/173,391.92
  6. Step 6: Final answer
    x = 176,837.54

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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.