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Finding the Fourth Proportional to 1,969,413, 2,954,120.40 and 621,712.14

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Solution

The fourth proportional to 1,969,413, 2,954,120.40 and 621,712.14 is: 932,568.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969,413 : 2,954,120.40 = 621,712.14 : x
  2. Step 2: Convert to fraction form
    1,969,413/2,954,120.40 = 621,712.14/x
  3. Step 3: Cross multiply
    1,969,413x = 2,954,120.40 × 621,712.14
  4. Step 4: Simplify right side
    1,969,413x = 1,836,612,515,701.66
  5. Step 5: Solve for x
    x = 1,836,612,515,701.66/1,969,413
  6. Step 6: Final answer
    x = 932,568.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.