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Finding the Fourth Proportional to 57,199.92, 78,929.52 and 33,321.60

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Solution

The fourth proportional to 57,199.92, 78,929.52 and 33,321.60 is: 45,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,199.92 : 78,929.52 = 33,321.60 : x
  2. Step 2: Convert to fraction form
    57,199.92/78,929.52 = 33,321.60/x
  3. Step 3: Cross multiply
    57,199.92x = 78,929.52 × 33,321.60
  4. Step 4: Simplify right side
    57,199.92x = 2,630,057,893.63
  5. Step 5: Solve for x
    x = 2,630,057,893.63/57,199.92
  6. Step 6: Final answer
    x = 45,980.10

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1.5x scale

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.