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Finding the Fourth Proportional to 93,736.40, 140,385.90 and 91,857.20

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Solution

The fourth proportional to 93,736.40, 140,385.90 and 91,857.20 is: 137,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,736.40 : 140,385.90 = 91,857.20 : x
  2. Step 2: Convert to fraction form
    93,736.40/140,385.90 = 91,857.20/x
  3. Step 3: Cross multiply
    93,736.40x = 140,385.90 × 91,857.20
  4. Step 4: Simplify right side
    93,736.40x = 12,895,455,693.48
  5. Step 5: Solve for x
    x = 12,895,455,693.48/93,736.40
  6. Step 6: Final answer
    x = 137,571.48

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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.