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Finding the Fourth Proportional to 531,357.20, 733,263.40 and 289,641.84

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Solution

The fourth proportional to 531,357.20, 733,263.40 and 289,641.84 is: 399,700.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,357.20 : 733,263.40 = 289,641.84 : x
  2. Step 2: Convert to fraction form
    531,357.20/733,263.40 = 289,641.84/x
  3. Step 3: Cross multiply
    531,357.20x = 733,263.40 × 289,641.84
  4. Step 4: Simplify right side
    531,357.20x = 212,383,760,380.66
  5. Step 5: Solve for x
    x = 212,383,760,380.66/531,357.20
  6. Step 6: Final answer
    x = 399,700.54

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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.