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Finding the Fourth Proportional to 722,376.72, 994,599 and 636,282

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Solution

The fourth proportional to 722,376.72, 994,599 and 636,282 is: 876,060.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,376.72 : 994,599 = 636,282 : x
  2. Step 2: Convert to fraction form
    722,376.72/994,599 = 636,282/x
  3. Step 3: Cross multiply
    722,376.72x = 994,599 × 636,282
  4. Step 4: Simplify right side
    722,376.72x = 632,845,440,918
  5. Step 5: Solve for x
    x = 632,845,440,918/722,376.72
  6. Step 6: Final answer
    x = 876,060.13

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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.