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Finding the Fourth Proportional to 68,488.62, 94,724.28 and 61,412.46

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Solution

The fourth proportional to 68,488.62, 94,724.28 and 61,412.46 is: 84,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,488.62 : 94,724.28 = 61,412.46 : x
  2. Step 2: Convert to fraction form
    68,488.62/94,724.28 = 61,412.46/x
  3. Step 3: Cross multiply
    68,488.62x = 94,724.28 × 61,412.46
  4. Step 4: Simplify right side
    68,488.62x = 5,817,251,056.53
  5. Step 5: Solve for x
    x = 5,817,251,056.53/68,488.62
  6. Step 6: Final answer
    x = 84,937.48

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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.