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Finding the Fourth Proportional to 68,624.32, 94,702.08 and 38,816.32

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Solution

The fourth proportional to 68,624.32, 94,702.08 and 38,816.32 is: 53,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,624.32 : 94,702.08 = 38,816.32 : x
  2. Step 2: Convert to fraction form
    68,624.32/94,702.08 = 38,816.32/x
  3. Step 3: Cross multiply
    68,624.32x = 94,702.08 × 38,816.32
  4. Step 4: Simplify right side
    68,624.32x = 3,675,986,241.95
  5. Step 5: Solve for x
    x = 3,675,986,241.95/68,624.32
  6. Step 6: Final answer
    x = 53,566.81

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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.