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Finding the Fourth Proportional to 316,431.64, 436,674.27 and 173,191.24

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Solution

The fourth proportional to 316,431.64, 436,674.27 and 173,191.24 is: 239,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,431.64 : 436,674.27 = 173,191.24 : x
  2. Step 2: Convert to fraction form
    316,431.64/436,674.27 = 173,191.24/x
  3. Step 3: Cross multiply
    316,431.64x = 436,674.27 × 173,191.24
  4. Step 4: Simplify right side
    316,431.64x = 75,628,158,297.39
  5. Step 5: Solve for x
    x = 75,628,158,297.39/316,431.64
  6. Step 6: Final answer
    x = 239,003.15

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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.