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Finding the Fourth Proportional to 139,832.60, 193,082.64 and 113,995.16

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Solution

The fourth proportional to 139,832.60, 193,082.64 and 113,995.16 is: 157,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,832.60 : 193,082.64 = 113,995.16 : x
  2. Step 2: Convert to fraction form
    139,832.60/193,082.64 = 113,995.16/x
  3. Step 3: Cross multiply
    139,832.60x = 193,082.64 × 113,995.16
  4. Step 4: Simplify right side
    139,832.60x = 22,010,486,440.02
  5. Step 5: Solve for x
    x = 22,010,486,440.02/139,832.60
  6. Step 6: Final answer
    x = 157,405.97

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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.