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Finding the Fourth Proportional to 93,630.72, 140,416.86 and 31,286.64

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Solution

The fourth proportional to 93,630.72, 140,416.86 and 31,286.64 is: 46,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,630.72 : 140,416.86 = 31,286.64 : x
  2. Step 2: Convert to fraction form
    93,630.72/140,416.86 = 31,286.64/x
  3. Step 3: Cross multiply
    93,630.72x = 140,416.86 × 31,286.64
  4. Step 4: Simplify right side
    93,630.72x = 4,393,171,748.75
  5. Step 5: Solve for x
    x = 4,393,171,748.75/93,630.72
  6. Step 6: Final answer
    x = 46,920.20

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1.5x scale

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.