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Finding the Fourth Proportional to 682,551.51, 941,965.11 and 392,256.42

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Solution

The fourth proportional to 682,551.51, 941,965.11 and 392,256.42 is: 541,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,551.51 : 941,965.11 = 392,256.42 : x
  2. Step 2: Convert to fraction form
    682,551.51/941,965.11 = 392,256.42/x
  3. Step 3: Cross multiply
    682,551.51x = 941,965.11 × 392,256.42
  4. Step 4: Simplify right side
    682,551.51x = 369,491,861,813.51
  5. Step 5: Solve for x
    x = 369,491,861,813.51/682,551.51
  6. Step 6: Final answer
    x = 541,339.16

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Double scale
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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.