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Finding the Fourth Proportional to 484,167.84, 668,630.75 and 398,970.96

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Solution

The fourth proportional to 484,167.84, 668,630.75 and 398,970.96 is: 550,974.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,167.84 : 668,630.75 = 398,970.96 : x
  2. Step 2: Convert to fraction form
    484,167.84/668,630.75 = 398,970.96/x
  3. Step 3: Cross multiply
    484,167.84x = 668,630.75 × 398,970.96
  4. Step 4: Simplify right side
    484,167.84x = 266,764,250,218.17
  5. Step 5: Solve for x
    x = 266,764,250,218.17/484,167.84
  6. Step 6: Final answer
    x = 550,974.74

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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.