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Finding the Fourth Proportional to 93,082, 128,452.20 and 55,355.44

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Solution

The fourth proportional to 93,082, 128,452.20 and 55,355.44 is: 76,389.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,082 : 128,452.20 = 55,355.44 : x
  2. Step 2: Convert to fraction form
    93,082/128,452.20 = 55,355.44/x
  3. Step 3: Cross multiply
    93,082x = 128,452.20 × 55,355.44
  4. Step 4: Simplify right side
    93,082x = 7,110,528,049.97
  5. Step 5: Solve for x
    x = 7,110,528,049.97/93,082
  6. Step 6: Final answer
    x = 76,389.94

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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.