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Finding the Fourth Proportional to 92,736.40, 139,072.20 and 48,348.40

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Solution

The fourth proportional to 92,736.40, 139,072.20 and 48,348.40 is: 72,505.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,736.40 : 139,072.20 = 48,348.40 : x
  2. Step 2: Convert to fraction form
    92,736.40/139,072.20 = 48,348.40/x
  3. Step 3: Cross multiply
    92,736.40x = 139,072.20 × 48,348.40
  4. Step 4: Simplify right side
    92,736.40x = 6,723,918,354.48
  5. Step 5: Solve for x
    x = 6,723,918,354.48/92,736.40
  6. Step 6: Final answer
    x = 72,505.71

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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.