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Finding the Fourth Proportional to 68,637.84, 94,671.39 and 62,990.82

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Solution

The fourth proportional to 68,637.84, 94,671.39 and 62,990.82 is: 86,882.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,637.84 : 94,671.39 = 62,990.82 : x
  2. Step 2: Convert to fraction form
    68,637.84/94,671.39 = 62,990.82/x
  3. Step 3: Cross multiply
    68,637.84x = 94,671.39 × 62,990.82
  4. Step 4: Simplify right side
    68,637.84x = 5,963,428,486.64
  5. Step 5: Solve for x
    x = 5,963,428,486.64/68,637.84
  6. Step 6: Final answer
    x = 86,882.52

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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.