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Finding the Fourth Proportional to 395,086.14, 592,723.53 and 128,846.88

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Solution

The fourth proportional to 395,086.14, 592,723.53 and 128,846.88 is: 193,301.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,086.14 : 592,723.53 = 128,846.88 : x
  2. Step 2: Convert to fraction form
    395,086.14/592,723.53 = 128,846.88/x
  3. Step 3: Cross multiply
    395,086.14x = 592,723.53 × 128,846.88
  4. Step 4: Simplify right side
    395,086.14x = 76,370,577,543.09
  5. Step 5: Solve for x
    x = 76,370,577,543.09/395,086.14
  6. Step 6: Final answer
    x = 193,301.08

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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.