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Finding the Fourth Proportional to 496,561.36, 685,486.92 and 317,817.04

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Solution

The fourth proportional to 496,561.36, 685,486.92 and 317,817.04 is: 438,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,561.36 : 685,486.92 = 317,817.04 : x
  2. Step 2: Convert to fraction form
    496,561.36/685,486.92 = 317,817.04/x
  3. Step 3: Cross multiply
    496,561.36x = 685,486.92 × 317,817.04
  4. Step 4: Simplify right side
    496,561.36x = 217,859,423,873.12
  5. Step 5: Solve for x
    x = 217,859,423,873.12/496,561.36
  6. Step 6: Final answer
    x = 438,736.16

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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.