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Finding the Fourth Proportional to 238,914.75, 358,372.13 and 72,702.75

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Solution

The fourth proportional to 238,914.75, 358,372.13 and 72,702.75 is: 109,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,914.75 : 358,372.13 = 72,702.75 : x
  2. Step 2: Convert to fraction form
    238,914.75/358,372.13 = 72,702.75/x
  3. Step 3: Cross multiply
    238,914.75x = 358,372.13 × 72,702.75
  4. Step 4: Simplify right side
    238,914.75x = 26,054,639,010.84
  5. Step 5: Solve for x
    x = 26,054,639,010.84/238,914.75
  6. Step 6: Final answer
    x = 109,054.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.