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Finding the Fourth Proportional to 68,612.48, 94,634.40 and 48,448.40

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Solution

The fourth proportional to 68,612.48, 94,634.40 and 48,448.40 is: 66,822.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.48 : 94,634.40 = 48,448.40 : x
  2. Step 2: Convert to fraction form
    68,612.48/94,634.40 = 48,448.40/x
  3. Step 3: Cross multiply
    68,612.48x = 94,634.40 × 48,448.40
  4. Step 4: Simplify right side
    68,612.48x = 4,584,885,264.96
  5. Step 5: Solve for x
    x = 4,584,885,264.96/68,612.48
  6. Step 6: Final answer
    x = 66,822.91

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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.