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Finding the Fourth Proportional to 356,674.58, 535,013.92 and 90,435.68

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Solution

The fourth proportional to 356,674.58, 535,013.92 and 90,435.68 is: 135,654.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,674.58 : 535,013.92 = 90,435.68 : x
  2. Step 2: Convert to fraction form
    356,674.58/535,013.92 = 90,435.68/x
  3. Step 3: Cross multiply
    356,674.58x = 535,013.92 × 90,435.68
  4. Step 4: Simplify right side
    356,674.58x = 48,384,347,664.67
  5. Step 5: Solve for x
    x = 48,384,347,664.67/356,674.58
  6. Step 6: Final answer
    x = 135,654.04

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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.