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Finding the Fourth Proportional to 247,108.90, 341,016.24 and 139,679.32

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Solution

The fourth proportional to 247,108.90, 341,016.24 and 139,679.32 is: 192,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,108.90 : 341,016.24 = 139,679.32 : x
  2. Step 2: Convert to fraction form
    247,108.90/341,016.24 = 139,679.32/x
  3. Step 3: Cross multiply
    247,108.90x = 341,016.24 × 139,679.32
  4. Step 4: Simplify right side
    247,108.90x = 47,632,916,512.16
  5. Step 5: Solve for x
    x = 47,632,916,512.16/247,108.90
  6. Step 6: Final answer
    x = 192,760.83

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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.