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Finding the Fourth Proportional to 111,665.63, 154,122.88 and 68,682.07

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Solution

The fourth proportional to 111,665.63, 154,122.88 and 68,682.07 is: 94,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,665.63 : 154,122.88 = 68,682.07 : x
  2. Step 2: Convert to fraction form
    111,665.63/154,122.88 = 68,682.07/x
  3. Step 3: Cross multiply
    111,665.63x = 154,122.88 × 68,682.07
  4. Step 4: Simplify right side
    111,665.63x = 10,585,477,875.75
  5. Step 5: Solve for x
    x = 10,585,477,875.75/111,665.63
  6. Step 6: Final answer
    x = 94,796.20

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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.