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Finding the Fourth Proportional to 263,459.48, 395,187.59 and 85,966.61

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Solution

The fourth proportional to 263,459.48, 395,187.59 and 85,966.61 is: 128,949.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,459.48 : 395,187.59 = 85,966.61 : x
  2. Step 2: Convert to fraction form
    263,459.48/395,187.59 = 85,966.61/x
  3. Step 3: Cross multiply
    263,459.48x = 395,187.59 × 85,966.61
  4. Step 4: Simplify right side
    263,459.48x = 33,972,935,665.35
  5. Step 5: Solve for x
    x = 33,972,935,665.35/263,459.48
  6. Step 6: Final answer
    x = 128,949.38

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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.