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Finding the Fourth Proportional to 641,690.39, 963,481.79 and 357,935.34

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Solution

The fourth proportional to 641,690.39, 963,481.79 and 357,935.34 is: 537,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,690.39 : 963,481.79 = 357,935.34 : x
  2. Step 2: Convert to fraction form
    641,690.39/963,481.79 = 357,935.34/x
  3. Step 3: Cross multiply
    641,690.39x = 963,481.79 × 357,935.34
  4. Step 4: Simplify right side
    641,690.39x = 344,864,182,087.46
  5. Step 5: Solve for x
    x = 344,864,182,087.46/641,690.39
  6. Step 6: Final answer
    x = 537,430.80

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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.