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Finding the Fourth Proportional to 316,626.03, 436,930.78 and 173,383.60

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Solution

The fourth proportional to 316,626.03, 436,930.78 and 173,383.60 is: 239,262.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,626.03 : 436,930.78 = 173,383.60 : x
  2. Step 2: Convert to fraction form
    316,626.03/436,930.78 = 173,383.60/x
  3. Step 3: Cross multiply
    316,626.03x = 436,930.78 × 173,383.60
  4. Step 4: Simplify right side
    316,626.03x = 75,756,631,587.21
  5. Step 5: Solve for x
    x = 75,756,631,587.21/316,626.03
  6. Step 6: Final answer
    x = 239,262.17

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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.