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Finding the Fourth Proportional to 368,440.86, 552,914.96 and 128,556.12

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Solution

The fourth proportional to 368,440.86, 552,914.96 and 128,556.12 is: 192,922.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,440.86 : 552,914.96 = 128,556.12 : x
  2. Step 2: Convert to fraction form
    368,440.86/552,914.96 = 128,556.12/x
  3. Step 3: Cross multiply
    368,440.86x = 552,914.96 × 128,556.12
  4. Step 4: Simplify right side
    368,440.86x = 71,080,601,304.77
  5. Step 5: Solve for x
    x = 71,080,601,304.77/368,440.86
  6. Step 6: Final answer
    x = 192,922.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.