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Finding the Fourth Proportional to 468,818.55, 646,972.71 and 253,958.61

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Solution

The fourth proportional to 468,818.55, 646,972.71 and 253,958.61 is: 350,464.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,818.55 : 646,972.71 = 253,958.61 : x
  2. Step 2: Convert to fraction form
    468,818.55/646,972.71 = 253,958.61/x
  3. Step 3: Cross multiply
    468,818.55x = 646,972.71 × 253,958.61
  4. Step 4: Simplify right side
    468,818.55x = 164,304,290,139.53
  5. Step 5: Solve for x
    x = 164,304,290,139.53/468,818.55
  6. Step 6: Final answer
    x = 350,464.57

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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.