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Finding the Fourth Proportional to 238,967.10, 358,493.85 and 120,339.90

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Solution

The fourth proportional to 238,967.10, 358,493.85 and 120,339.90 is: 180,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,967.10 : 358,493.85 = 120,339.90 : x
  2. Step 2: Convert to fraction form
    238,967.10/358,493.85 = 120,339.90/x
  3. Step 3: Cross multiply
    238,967.10x = 358,493.85 × 120,339.90
  4. Step 4: Simplify right side
    238,967.10x = 43,141,114,059.62
  5. Step 5: Solve for x
    x = 43,141,114,059.62/238,967.10
  6. Step 6: Final answer
    x = 180,531.60

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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.