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Finding the Fourth Proportional to 316,626.39, 436,924.40 and 173,388.15

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Solution

The fourth proportional to 316,626.39, 436,924.40 and 173,388.15 is: 239,264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,626.39 : 436,924.40 = 173,388.15 : x
  2. Step 2: Convert to fraction form
    316,626.39/436,924.40 = 173,388.15/x
  3. Step 3: Cross multiply
    316,626.39x = 436,924.40 × 173,388.15
  4. Step 4: Simplify right side
    316,626.39x = 75,757,512,538.92
  5. Step 5: Solve for x
    x = 75,757,512,538.92/316,626.39
  6. Step 6: Final answer
    x = 239,264.68

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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.