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Finding the Fourth Proportional to 682,537.68, 940,626.54 and 491,218.92

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Solution

The fourth proportional to 682,537.68, 940,626.54 and 491,218.92 is: 676,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,537.68 : 940,626.54 = 491,218.92 : x
  2. Step 2: Convert to fraction form
    682,537.68/940,626.54 = 491,218.92/x
  3. Step 3: Cross multiply
    682,537.68x = 940,626.54 × 491,218.92
  4. Step 4: Simplify right side
    682,537.68x = 462,053,553,102.14
  5. Step 5: Solve for x
    x = 462,053,553,102.14/682,537.68
  6. Step 6: Final answer
    x = 676,964.17

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Double scale
Find fourth proportional to 682,538.68, 940,627.92 and 491,219.92
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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.