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Finding the Fourth Proportional to 93,771.83, 129,270.60 and 66,867.68

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Solution

The fourth proportional to 93,771.83, 129,270.60 and 66,867.68 is: 92,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,771.83 : 129,270.60 = 66,867.68 : x
  2. Step 2: Convert to fraction form
    93,771.83/129,270.60 = 66,867.68/x
  3. Step 3: Cross multiply
    93,771.83x = 129,270.60 × 66,867.68
  4. Step 4: Simplify right side
    93,771.83x = 8,644,024,467.86
  5. Step 5: Solve for x
    x = 8,644,024,467.86/93,771.83
  6. Step 6: Final answer
    x = 92,181.47

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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.