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Finding the Fourth Proportional to 486,165.68, 670,908.76 and 268,374.48

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Solution

The fourth proportional to 486,165.68, 670,908.76 and 268,374.48 is: 370,356.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,165.68 : 670,908.76 = 268,374.48 : x
  2. Step 2: Convert to fraction form
    486,165.68/670,908.76 = 268,374.48/x
  3. Step 3: Cross multiply
    486,165.68x = 670,908.76 × 268,374.48
  4. Step 4: Simplify right side
    486,165.68x = 180,054,789,592.45
  5. Step 5: Solve for x
    x = 180,054,789,592.45/486,165.68
  6. Step 6: Final answer
    x = 370,356.85

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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.