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Finding the Fourth Proportional to 236,650.86, 326,620.28 and 139,850.60

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Solution

The fourth proportional to 236,650.86, 326,620.28 and 139,850.60 is: 193,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,650.86 : 326,620.28 = 139,850.60 : x
  2. Step 2: Convert to fraction form
    236,650.86/326,620.28 = 139,850.60/x
  3. Step 3: Cross multiply
    236,650.86x = 326,620.28 × 139,850.60
  4. Step 4: Simplify right side
    236,650.86x = 45,678,042,130.17
  5. Step 5: Solve for x
    x = 45,678,042,130.17/236,650.86
  6. Step 6: Final answer
    x = 193,018.70

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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.