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Finding the Fourth Proportional to 636,935.40, 955,403.10 and 353,500.20

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Solution

The fourth proportional to 636,935.40, 955,403.10 and 353,500.20 is: 530,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,935.40 : 955,403.10 = 353,500.20 : x
  2. Step 2: Convert to fraction form
    636,935.40/955,403.10 = 353,500.20/x
  3. Step 3: Cross multiply
    636,935.40x = 955,403.10 × 353,500.20
  4. Step 4: Simplify right side
    636,935.40x = 337,735,186,930.62
  5. Step 5: Solve for x
    x = 337,735,186,930.62/636,935.40
  6. Step 6: Final answer
    x = 530,250.30

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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.