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Finding the Fourth Proportional to 353,262.33, 487,491.60 and 200,314.49

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Solution

The fourth proportional to 353,262.33, 487,491.60 and 200,314.49 is: 276,428.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,262.33 : 487,491.60 = 200,314.49 : x
  2. Step 2: Convert to fraction form
    353,262.33/487,491.60 = 200,314.49/x
  3. Step 3: Cross multiply
    353,262.33x = 487,491.60 × 200,314.49
  4. Step 4: Simplify right side
    353,262.33x = 97,651,631,233.28
  5. Step 5: Solve for x
    x = 97,651,631,233.28/353,262.33
  6. Step 6: Final answer
    x = 276,428.09

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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.