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Finding the Fourth Proportional to 626,686, 864,827.76 and 358,414

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Solution

The fourth proportional to 626,686, 864,827.76 and 358,414 is: 494,611.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,686 : 864,827.76 = 358,414 : x
  2. Step 2: Convert to fraction form
    626,686/864,827.76 = 358,414/x
  3. Step 3: Cross multiply
    626,686x = 864,827.76 × 358,414
  4. Step 4: Simplify right side
    626,686x = 309,966,376,772.64
  5. Step 5: Solve for x
    x = 309,966,376,772.64/626,686
  6. Step 6: Final answer
    x = 494,611.94

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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.