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Finding the Fourth Proportional to 238,803.21, 358,191.86 and 72,578.25

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Solution

The fourth proportional to 238,803.21, 358,191.86 and 72,578.25 is: 108,863.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,803.21 : 358,191.86 = 72,578.25 : x
  2. Step 2: Convert to fraction form
    238,803.21/358,191.86 = 72,578.25/x
  3. Step 3: Cross multiply
    238,803.21x = 358,191.86 × 72,578.25
  4. Step 4: Simplify right side
    238,803.21x = 25,996,938,000.15
  5. Step 5: Solve for x
    x = 25,996,938,000.15/238,803.21
  6. Step 6: Final answer
    x = 108,863.44

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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.