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Finding the Fourth Proportional to 78,295.08, 117,460.56 and 33,929.28

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Solution

The fourth proportional to 78,295.08, 117,460.56 and 33,929.28 is: 50,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,295.08 : 117,460.56 = 33,929.28 : x
  2. Step 2: Convert to fraction form
    78,295.08/117,460.56 = 33,929.28/x
  3. Step 3: Cross multiply
    78,295.08x = 117,460.56 × 33,929.28
  4. Step 4: Simplify right side
    78,295.08x = 3,985,352,229.20
  5. Step 5: Solve for x
    x = 3,985,352,229.20/78,295.08
  6. Step 6: Final answer
    x = 50,901.69

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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.