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Finding the Fourth Proportional to 526,936.40, 727,186.38 and 320,134.40

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Solution

The fourth proportional to 526,936.40, 727,186.38 and 320,134.40 is: 441,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,936.40 : 727,186.38 = 320,134.40 : x
  2. Step 2: Convert to fraction form
    526,936.40/727,186.38 = 320,134.40/x
  3. Step 3: Cross multiply
    526,936.40x = 727,186.38 × 320,134.40
  4. Step 4: Simplify right side
    526,936.40x = 232,797,375,449.47
  5. Step 5: Solve for x
    x = 232,797,375,449.47/526,936.40
  6. Step 6: Final answer
    x = 441,794.07

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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.