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Finding the Fourth Proportional to 317,640.82, 438,549.47 and 196,911.13

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Solution

The fourth proportional to 317,640.82, 438,549.47 and 196,911.13 is: 271,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,640.82 : 438,549.47 = 196,911.13 : x
  2. Step 2: Convert to fraction form
    317,640.82/438,549.47 = 196,911.13/x
  3. Step 3: Cross multiply
    317,640.82x = 438,549.47 × 196,911.13
  4. Step 4: Simplify right side
    317,640.82x = 86,355,270,356.09
  5. Step 5: Solve for x
    x = 86,355,270,356.09/317,640.82
  6. Step 6: Final answer
    x = 271,864.53

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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.