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Finding the Fourth Proportional to 263,459.12, 395,262.66 and 105,798.28

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Solution

The fourth proportional to 263,459.12, 395,262.66 and 105,798.28 is: 158,727.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,459.12 : 395,262.66 = 105,798.28 : x
  2. Step 2: Convert to fraction form
    263,459.12/395,262.66 = 105,798.28/x
  3. Step 3: Cross multiply
    263,459.12x = 395,262.66 × 105,798.28
  4. Step 4: Simplify right side
    263,459.12x = 41,818,109,576.22
  5. Step 5: Solve for x
    x = 41,818,109,576.22/263,459.12
  6. Step 6: Final answer
    x = 158,727.13

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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.