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Finding the Fourth Proportional to 639,040.80, 958,561.20 and 544,052.10

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Solution

The fourth proportional to 639,040.80, 958,561.20 and 544,052.10 is: 816,078.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,040.80 : 958,561.20 = 544,052.10 : x
  2. Step 2: Convert to fraction form
    639,040.80/958,561.20 = 544,052.10/x
  3. Step 3: Cross multiply
    639,040.80x = 958,561.20 × 544,052.10
  4. Step 4: Simplify right side
    639,040.80x = 521,507,233,838.52
  5. Step 5: Solve for x
    x = 521,507,233,838.52/639,040.80
  6. Step 6: Final answer
    x = 816,078.15

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Double scale
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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.